v15.64.4

## Bug Fixes
* Updates **Attendance Request** so it can still be submitted for the other half of the day when half-day leave is already approved for that day. It also changes the other half of the existing **Attendance** from Absent to Present. (https://github.com/frappe/hrms/pull/5388)
* Prevents submitting a half-day **Attendance Request** for a date when leave already covers the full day. (https://github.com/frappe/hrms/pull/5395)

**Authors**: @krishna-254, @iamkhanraheel
**Reviewers**: @asmitahase, @deepeshgarg007, @iamkhanraheel

<details>
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 For these release notes, we used an LLM (OpenAI gpt-6-luna) to review and summarise the code changes, along with the associated issue and PR descriptions. It may contain typical errors and inaccuracies. You can read the prompt [here](https://github.com/barredterra/pretty_release_notes). 

Changes with the following labels were excluded:
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Changes with the following types were excluded:
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