This updates the examples for PhysicalKeyboardKey and LogicalKeyboardKey to use Focus widgets that handle the keys instead of using RawKeyboardListener, since that usually leads people down the wrong path. Updated the See Also and added tests as well. Also exposed the `physicalKey` attribute for `tester.sendKeyEvent`.

Ensure that the engine frame callbacks are installed if the first scheduled frame is a forced frame (#101544)

See https://github.com/flutter/flutter/issues/98419

* Run update-packages

* Update DwdsLauncher, disable failing test

* Fix analyze error
Co-authored-by: Jenn Magder <magder@google.com>

Co-authored-by: Christopher Fujino <christopherfujino@gmail.com>

This reverts commit 0b216f7a.

This adjusts some of the names in the PlatformMenuBar to be more consistent with the rest of the API.

Matching engine PR is flutter/engine#32433

I noticed that AnimatedModalBarrier didn't have the onDismiss callback that ModalBarrier does, and so I added that, and while I was at it, I updated the unit tests to perform all of the tests that are done on ModalBarrier also on AnimatedModalBarrier. The tests are unchanged, other than using AnimatedModalBarrier instead.