[CP-stable]Add ContextMenuButtonKind - #195015

Adds CHANGELOG.md entries for the 3.47.9 stable hotfix (#195073, #194959, #195015). CI-only cherry-picks are omitted.

Tracker: #195427

### Edits to cherry-pick changelog descriptions
- #195073 and #195015: used verbatim from the cherry-pick PR's "Changelog Description".
- #194959 (@bkonyi): **edited** to follow [Hotfix Documentation Best Practices](https://github.com/flutter/flutter/blob/main/docs/releases/Hotfix-Documentation-Best-Practices.md) (describe the state prior to the fix):
  - Original: "When running `flutter test` in pub workspaces, monorepos, or symlinked directories, fix a StateError crash during native assets compilation by falling back to appName matching."
  - Changelog: "When running `flutter test` in pub workspaces, monorepos, or symlinked directories on any platform, native assets compilation crashed with a `StateError`."
  - Changes: rewrote as the pre-fix behavior, added "on any platform", dropped the implementation detail ("falling back to appName matching").

@bkonyi FYI — please let us know if the edited wording for #194959 looks right.

This pull request is created by [automatic cherry pick workflow](https://github.com/flutter/flutter/blob/main/docs/releases/Flutter-Cherrypick-Process.md#automatically-creates-a-cherry-pick-request)

Cherry-pick of #193528 (already cherry-picked to `3.47.9` stable in #195015, ensuring `3.50` does not regress public API shipped in `3.47.9`).

Also includes `e58c176fe4` / `7d0aca2908` (`+12/-1`, test-only) restoring the `no-shuffle` tag on `packages/flutter/test/material/text_field_test.dart` (reverting #193550 and restoring `no-shuffle` in `packages/flutter/dart_test.yaml`) because `3.50` branched before #194256 fixed #194008 (`Theme._kFallbackTheme` platform caching across shuffled `TargetPlatformVariant` tests).

### Issue Link:
#193527
#194008

### Impact Description:
`ContextMenuButtonKind` and `ContextMenuButtonItem.kind` shipped in Flutter `3.47.9` stable (`#195015`) after `flutter-3.50-candidate.0` branched. Without cherry-picking `#193528` into `flutter-3.50-candidate.0`, packages and apps adopting `ContextMenuButtonKind` on `3.47.9` stable (including `cupertino_ui` and `material_ui` for iOS Translate context menu support in `#180021`) would fail to compile on `3.50.0`. The change itself is purely additive and does not deprecate `ContextMenuButtonType` or alter existing behavior. Restoring `no-shuffle` on `text_field_test.dart` unblocks `framework_tests_libraries` and `Mac framework_tests_impeller` on `flutter-3.50-candidate.0` under daily shuffled test seeds.

### Changelog Description:
- [flutter/193527](#193527) When building custom text selection menus, packages can't add new actions such as Translate without breaking exhaustive switches on `ContextMenuButtonType`; adds the extensible `ContextMenuButtonKind`.

### Workaround:
No.

### Risk:
What is the risk level of this cherry-pick?

### Test Coverage:
Are you confident that your fix is well-tested by automated tests?

### Validation Steps:
Run `flutter test test/widgets/context_menu_button_item_test.dart test/widgets/editable_text_test.dart test/widgets/selectable_region_test.dart test/widgets/system_context_menu_test.dart` and `flutter test --test-randomize-ordering-seed=20261103 --fatal-warnings test/material/text_field_test.dart` to verify `ContextMenuButtonKind` backwards compatibility and `text_field_test.dart` execution under shuffled seeds.