wxt-v0.20.15

[compare changes](https://github.com/wxt-dev/wxt/compare/wxt-v0.20.14...wxt-v0.20.15)

### 🚀 Enhancements

- Export `normalizePath` from `wxt` module ([#2080](https://github.com/wxt-dev/wxt/pull/2080))
- **popup:** Add Firefox `default_area` and `theme_icons` support ([#2097](https://github.com/wxt-dev/wxt/pull/2097))
- Add log `--level` cli option ([#1973](https://github.com/wxt-dev/wxt/pull/1973))

### 🩹 Fixes

- Content script is incorrectly invalidated when injected multiple times ([#2035](https://github.com/wxt-dev/wxt/pull/2035))
- Use `uiContainer` to apply position when creating shadow root ui ([#2036](https://github.com/wxt-dev/wxt/pull/2036))
- Make `ExtensionRunner#closeBrowser` optional ([#2092](https://github.com/wxt-dev/wxt/pull/2092))
- Rename `name` to `names` prop of `rollup` to fix deprecated warning ([#2106](https://github.com/wxt-dev/wxt/pull/2106))

### 💅 Refactors

- Standardize file existence checks to `pathExists` ([#2083](https://github.com/wxt-dev/wxt/pull/2083))
- Cleanup esm ([#1950](https://github.com/wxt-dev/wxt/pull/1950))
- `async`/`await` cleanup ([#2088](https://github.com/wxt-dev/wxt/pull/2088))
- Cleanup unnecssary checks ([#2089](https://github.com/wxt-dev/wxt/pull/2089))
- Simplify import paths ([#2093](https://github.com/wxt-dev/wxt/pull/2093))

### 📖 Documentation

- Fix JSDoc ([6ae5fb5e](https://github.com/wxt-dev/wxt/commit/6ae5fb5e))

### 🏡 Chore

- Cleanup comment line lengths ([#2090](https://github.com/wxt-dev/wxt/pull/2090))
- Cleanup `@ts-*` comments ([#2094](https://github.com/wxt-dev/wxt/pull/2094))
- Update JSDoc to use `@internal` ([#2091](https://github.com/wxt-dev/wxt/pull/2091))
- Fix typos ([#2086](https://github.com/wxt-dev/wxt/pull/2086))
- Remove unused code ([#2087](https://github.com/wxt-dev/wxt/pull/2087))
- Simplify imports of `cli/__tests__/index.ts` ([#2104](https://github.com/wxt-dev/wxt/pull/2104))

### ❤️ Contributors

- Nick Doan ([@nickbar01234](https://github.com/nickbar01234))
- Patryk Kuniczak ([@PatrykKuniczak](https://github.com/PatrykKuniczak))
- Aaron ([@aklinker1](https://github.com/aklinker1))
- Wotan-allfather <wotan-ai@proton.me>
- Namu ([@namuorg](https://github.com/namuorg))
- Eli ([@lishaduck](https://github.com/lishaduck))