Remove 1745 decorative breaks

Reland "Fix bug with clicking `Copy` or `Select All` within contextMenu"

Revert "Fix bug with clicking `Copy` or `Select All` within contextMenu"

Fix bug with clicking `Copy` or `Select All` within contextMenu

contextMenuBuilder now works with SelectableRegion on web (when using BrowserContextMenu.disable).

* Fix typos

* lowercase animated & opacity

* Undo typo fix

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Co-authored-by: Michael Goderbauer <goderbauer@google.com>

* fix a crash bug

* review feedback

* Remove superfluous words.

* Update packages/flutter/lib/src/widgets/slotted_render_object_widget.dart
Co-authored-by: Michael Goderbauer <goderbauer@google.com>

* Add selection feedback for both selection area and text field

* Addressing comment

* Fixes more test

* Support keyboard selection in selectable region

* fix some comments

* addressing comments

* Can show context menus anywhere in the app, not just on text.
* Unifies all desktop/mobile context menus to go through one class (ContextMenuController).
* All context menus are now just plain widgets that can be fully customized.
* Existing default context menus can be customized and reused.

* added Magnifier for iOS and Android

* Fixes a bug when dragging selection handle sends events in wrong coordinates system

* remove comments

* addressing comments

* Use `curly_braces_in_flow_control_structures` for `widgets`

* fix comments

* fix comments

* Support global selection

* addressing comments

* add new test

* Addressing review comments

* update

* addressing comments

* addressing comments

* Addressing comments

* fix build