Add changelog for 0.76.0-rc.2

[blakef]

Summary:
Add changelog for 0.76.0-rc.2

Changelog:
[Internal] - add changelog

[react-native-bot]

	Warnings
⚠️	📋 Missing Summary - Can you add a Summary? To do so, add a "## Summary" section to your PR description. This is a good place to explain the motivation for making this change.
⚠️	📋 Missing Test Plan - Can you add a Test Plan? To do so, add a "## Test Plan" section to your PR description. A Test Plan lets us know how these changes were tested.

Generated by 🚫 dangerJS against ba46a37

[cipolleschi]

@blakef could you import and land this?

[facebook-github-bot]

@blakef has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[facebook-github-bot]

@blakef merged this pull request in eb7c439.

[react-native-bot]

This pull request was successfully merged by @blakef in eb7c439

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