Add closed `flutter/engine` issues to 'Flutter ... release notes'

[fzyzcjy]

Page URL

https://docs.flutter.dev/development/tools/sdk/release-notes/release-notes-3.3.0/

Page source

https://github.com/flutter/website/tree/main/src/development/tools/sdk/release-notes/release-notes-3.3.0.md

Describe the problem

A lot of very important features/bugfixes are done in the flutter/engine repo instead of flutter/flutter repo. However, this webpage only discusses the ones in flutter/flutter.

Expected fix

also describe those in flutter/engine

Additional context

No response

[itsjustkevin]

With the release of Flutter 3.10, engine notes are now added.

See: https://docs.flutter.dev/release/release-notes/release-notes-3.10.0