This reverts commit 5fd259be.

This reverts commit d056500b.

This reverts commit 31de052e.

This reverts commit e2490f29.

This reverts commit 35ad43f2.

This reverts commit c26ed03c.

* Migrate to ChannelBuffers.push

* Move TestDefaultBinaryMessenger to its own file

* Apply deprecations and fix usages

This reverts commit 14552a96.

[Material] Add support for customizing active + disabled state color for selection controls. (#68831)

* Add new MaterialStateProperty param to selection controls

Reland "Prevent material switch from recreating its render object when it becomes disabled (#61398)", reverted in #64062 (#64354)

Revert "Prevent material switch from recreating its render object when it becomes disabled (#61398)" (#64062)

* add language version 2.8 in packages/flutter

* enable non-nullable analyzer flag

* Adds default cursor and/or mouseCursor property to a number of widgets.
* Adds `MaterialStateMouseCurrsor`.

This PR adds the linux and windows target platform enum values, along with automatically setting the defaultTargetPlatform to the appropriate value on those platforms.

Fixes #31366

[a11y] Make sure RenderFractionalTranslation updates its semantics after the translation field is set (#48985)

This contains the test changes for adding TargetPlatform.macOS, which was done in #43457.

The main goal of this PR is to enable tests in the material library that are currently running only on iOS to also run on macOS, but only for the tests where that makes sense. For instance, we don't run any of the haptic feedback tests on macOS.

This PR rewrites MouseTracker's lifecycle, so that mouse callbacks are all triggered in post frame, instead of the current one where some are triggered during the build phase. This PR also changes the onExit callback to MouseRegion, RenderMouseRegion, and MouseTrackerAnnotation, so that it is no longer triggered on dispose.