v0.19.0

## Highlights

Highlights since [v0.18.0](https://github.com/facebook/lexical/releases/tag/v0.18.0)

A11y:
- 🆕 aria-errormessage and aria-invalid support 
https://github.com/facebook/lexical/pull/6745 
https://github.com/facebook/lexical/pull/6751 

Clipboard:
- 🆕 Trust HTML for rich text clipboard 
https://github.com/facebook/lexical/pull/6755 


Markdown:
- 🆕 Add ability to hook into the import process for multiline element transformers
https://github.com/facebook/lexical/pull/6682 

Code: 
- ✅ Fix: Add global type declarations for Prism  
https://github.com/facebook/lexical/pull/6736 

Export:
- ✅ Fix: Preserve indentation when serializing to and from HTML 
https://github.com/facebook/lexical/pull/6693 

List:
- ✅ Fix: Retain indentation when list format is removed and reapplied
https://github.com/facebook/lexical/pull/6684 

Link: 
- 🆕 add attributes in LinkPlugin
https://github.com/facebook/lexical/pull/6760 

Selection:
- ✅ Fix: Insertion into inline ElementNode should not crash 
https://github.com/facebook/lexical/pull/6703 

- ✅ Fix: lines were being deleted with deleteLine
https://github.com/facebook/lexical/pull/6719/ 

Text:
- ✅ Fix TextNode in token mode should not be split by removeText
https://github.com/facebook/lexical/pull/6690 

Collab:
- ✅ Fix missing setLocalStateField method to ProviderAwareness type
https://github.com/facebook/lexical/pull/6683 

- ✅ Fix: preserve custom fields in Lexical-Yjs sync 
https://github.com/facebook/lexical/pull/6724 

Table:
- 🆕 Support backward selection in rows deletion
https://github.com/facebook/lexical/pull/6680 

- ✅ Fix: Style buttons in toolbar respect table selection
https://github.com/facebook/lexical/pull/6678 

- ✅ Fix Table formatting when no TextNodes present
https://github.com/facebook/lexical/pull/6675 

- ✅ Fix: colWidths not imported from DOM for TableNode 
https://github.com/facebook/lexical/pull/6731 

- ✅ Fix: Shift+down selects an extra subsequent element for Table selection
https://github.com/facebook/lexical/pull/6679 

- 🆕 Inserted node returned from $insertTableRow__EXPERIMENTAL and $insertTableColumn__EXPERIMENTAL
https://github.com/facebook/lexical/pull/6741 

- ✅ Fix calling split on undefined error
https://github.com/facebook/lexical/pull/6746 

## What's Changed
* v0.18.0 by @potatowagon in https://github.com/facebook/lexical/pull/6676
* Support backward selection in rows deletion by @fantactuka in https://github.com/facebook/lexical/pull/6680
* [lexical-table][lexical-playground] Bug Fix: Make style buttons in toolbar respect table selection by @KatsiarynaDzibrova in https://github.com/facebook/lexical/pull/6678
* [lexical] Bug Fix: Fix Table formatting when no TextNodes present by @KatsiarynaDzibrova in https://github.com/facebook/lexical/pull/6675
* [lexical-yjs] Bug Fix: Add missing setLocalStateField method to ProviderAwareness type by @collierrgbsitisfise in https://github.com/facebook/lexical/pull/6683
* [lexical] Bug Fix: TextNode in token mode should not be split by removeText by @etrepum in https://github.com/facebook/lexical/pull/6690
* [lexical-playground] 3 Bug Fixes, 1 UX Improvement: All Regarding Excalidraw Node by @neysanfoo in https://github.com/facebook/lexical/pull/6666
* [lexical-playground] Bug Fix: toolbar font size input keyboard accessibility by @rilrom in https://github.com/facebook/lexical/pull/6695
* [lexical-playground] Bug Fix: Track Resizing Actions for Excalidraw in History Stack by @neysanfoo in https://github.com/facebook/lexical/pull/6696
* [lexical] Bug Fix: Insertion into inline ElementNode should not crash by @etrepum in https://github.com/facebook/lexical/pull/6703
* [lexical][lexical-list] Bug Fix: Retain indentation when list format is removed and reapplied by @SeaBa55 in https://github.com/facebook/lexical/pull/6684
* [lexical][lexical-list][lexical-rich-text]: Fix: Preserve indentation when serializing to and from HTML by @GermanJablo in https://github.com/facebook/lexical/pull/6693
* fix: preserve custom fields in Lexical-Yjs sync by @collierrgbsitisfise in https://github.com/facebook/lexical/pull/6724
* [lexical-playground] Remove unused command by @ivailop7 in https://github.com/facebook/lexical/pull/6726
* [lexical-playground] Bug Fix: match toolbar font size input with the rest of toolbar items in Read-Only mode by @bedre7 in https://github.com/facebook/lexical/pull/6698
* Chore: add workflow to auto close stale pr based on label by @potatowagon in https://github.com/facebook/lexical/pull/6732
* [lexical-table] Bug Fix: `colWidths` not imported from DOM for TableNode by @cwstra in https://github.com/facebook/lexical/pull/6731
* [lexical] Bug Fix: lines were being deleted with `deleteLine` by @taro-shono in https://github.com/facebook/lexical/pull/6719
* [lexical-playground] Table Hover Actions Layout Fixes by @ivailop7 in https://github.com/facebook/lexical/pull/6725
* [*] Chore: Disable react-beta test job for now by @etrepum in https://github.com/facebook/lexical/pull/6738
* [lexical-code] Bug Fix: Add global type declarations for Prism by @etrepum in https://github.com/facebook/lexical/pull/6736
* [lexical-playground] Bug Fix: Disable image and inline focusing, adding caption and editing in read-only mode by @neysanfoo in https://github.com/facebook/lexical/pull/6705
* [lexical-markdown] Feature: add ability to hook into the import process for multiline element transformers by @AlessioGr in https://github.com/facebook/lexical/pull/6682
* [lexical-playground] Bug Fix: Disable equation editing in read-only mode by @neysanfoo in https://github.com/facebook/lexical/pull/6707
* Bug Fix: Shift+down selects an extra subsequent element  for Table selection by @KatsiarynaDzibrova in https://github.com/facebook/lexical/pull/6679
* [lexical-table] Return inserted node from `$insertTableRow__EXPERIMENTAL` and `$insertTableColumn__EXPERIMENTAL` by @amanharwara in https://github.com/facebook/lexical/pull/6741
* [lexical-react] Feature: Add aria-errormessage and aria-invalid support to LexicalContentEditable by @ejhammond in https://github.com/facebook/lexical/pull/6745
* Add ariaErrorMessage and ariaInvalid to Flow type by @ejhammond in https://github.com/facebook/lexical/pull/6751
* [lexical-table] [lexical-selection] Try to fix calling split on undefined by @ivailop7 in https://github.com/facebook/lexical/pull/6746
* [lexical-playground] Bug Fix: Disable table hover actions in read-only mode by @neysanfoo in https://github.com/facebook/lexical/pull/6706
* [lexical-playground] Bug Fix: Disable editing of Excalidraw Component in Read-Only Mode by @neysanfoo in https://github.com/facebook/lexical/pull/6704
* Trust HTML for rich text clipboard by @zurfyx in https://github.com/facebook/lexical/pull/6755
* [lexical-react] replace abstract component by @potatowagon in https://github.com/facebook/lexical/pull/6752
* [lexical-react] Feature: add attributes in LinkPlugin by @taro-shono in https://github.com/facebook/lexical/pull/6760
* [lexical] Add missing commands to Lexical.js.flow by @potatowagon in https://github.com/facebook/lexical/pull/6769
* update dependencies to address security vulnerabilities by @potatowagon in https://github.com/facebook/lexical/pull/6764

## New Contributors
* @collierrgbsitisfise made their first contribution in https://github.com/facebook/lexical/pull/6683
* @rilrom made their first contribution in https://github.com/facebook/lexical/pull/6695
* @SeaBa55 made their first contribution in https://github.com/facebook/lexical/pull/6684
* @bedre7 made their first contribution in https://github.com/facebook/lexical/pull/6698
* @cwstra made their first contribution in https://github.com/facebook/lexical/pull/6731
* @taro-shono made their first contribution in https://github.com/facebook/lexical/pull/6719
* @ejhammond made their first contribution in https://github.com/facebook/lexical/pull/6745

**Full Changelog**: https://github.com/facebook/lexical/compare/v0.18.0...v0.19.0