[flutter_releases] Cherrypicks for SliverReorderableList and Slider regressions

[jonahwilliams]

Merge cherry picks for SliverReorderableList and Slider regressions in 3.0

[flutter-dashboard]

This pull request was opened from and to a release candidate branch. This should only be done as part of the official Flutter release process. If you are attempting to make a regular contribution to the Flutter project, please close this PR and follow the instructions at Tree Hygiene for detailed instructions on contributing to Flutter.

Reviewers: Use caution before merging pull requests to release branches. Ensure the proper procedure has been followed.

[CaseyHillers]

Linux build_tests_1_2 is failing. Is it related to this change?

[jonahwilliams]

The failure is:

You may need to restart any open editors for them to read new settings.
▌09:31:33▐ ELAPSED TIME: 0.720s for bin/flutter config --enable-linux-desktop in .
Testing Linux build for dev/integration_tests/flutter_gallery...
▌09:31:33▐ RUNNING: cd dev/integration_tests/flutter_gallery; ../../../bin/flutter build linux --debug -v
...
[  +15 ms] Found plugin integration_test at /b/s/w/ir/x/w/flutter/packages/integration_test/
[  +60 ms] Generating /b/s/w/ir/x/w/flutter/dev/integration_tests/flutter_gallery/android/app/src/main/java/io/flutter/plugins/GeneratedPluginRegistrant.java
[  +68 ms] 💪 Building with sound null safety 💪
[  +10 ms] Building Linux application...
[   +7 ms] executing: [build/linux/x64/debug/] cmake -G Ninja -DCMAKE_BUILD_TYPE=Debug -DFLUTTER_TARGET_PLATFORM=linux-x64 /b/s/w/ir/x/w/flutter/dev/integration_tests/flutter_gallery/linux
[  +44 ms] CMake Error: CMake was unable to find a build program corresponding to "Ninja".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
[   +1 ms] CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
[        ] -- Configuring incomplete, errors occurred!
[        ] See also "/b/s/w/ir/x/w/flutter/dev/integration_tests/flutter_gallery/build/linux/x64/debug/CMakeFiles/CMakeOutput.log".
[   +5 ms] Building Linux application... (completed in 60ms)
[        ] "flutter linux" took 3,661ms.
[   +4 ms] Unable to generate build files
[        ] 
           #0      throwToolExit (package:flutter_tools/src/base/common.dart:10:3)
           #1      _runCmake (package:flutter_tools/src/linux/build_linux.dart:156:5)
           <asynchronous suspension>
           #2      buildLinux (package:flutter_tools/src/linux/build_linux.dart:76:5)
           <asynchronous suspension>
           #3      BuildLinuxCommand.runCommand (package:flutter_tools/src/commands/build_linux.dart:85:5)
           <asynchronous suspension>
           #4      FlutterCommand.run.<anonymous closure> (package:flutter_tools/src/runner/flutter_command.dart:1183:27)
           <asynchronous suspension>
           #5      AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
           <asynchronous suspension>
           #6      CommandRunner.runCommand (package:args/command_runner.dart:209:13)
           <asynchronous suspension>
           #7      FlutterCommandRunner.runCommand.<anonymous closure> (package:flutter_tools/src/runner/flutter_command_runner.dart:281:9)
           <asynchronous suspension>
           #8      AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
           <asynchronous suspension>
           #9      FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:229:5)
           <asynchronous suspension>
           #10     run.<anonymous closure>.<anonymous closure> (package:flutter_tools/runner.dart:62:9)
           <asynchronous suspension>
           #11     AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
           <asynchronous suspension>
           #12     main (package:flutter_tools/executable.dart:94:3)
           <asynchronous suspension>


[   +3 ms] ensureAnalyticsSent: 1ms
[   +1 ms] Running shutdown hooks
[        ] Shutdown hooks complete
[        ] exiting with code 1

Which could be due to bot setup? But it is unrelated to the changes here which are purely framework changes

[CaseyHillers]

Thanks for checking, I reran it to deflake it.

[fluttergithubbot]

This pull request is not suitable for automatic merging in its current state.

• The status or check suite tree status luci-flutter has failed. Please fix the issues identified (or deflake) before re-applying this label.

[itsjustkevin]

The following tests have been removed:

• Linux build_aar_module_test
• Mac build_aar_module_test
• Mac gradle_plugin_fat_apk_test
• Windows build_aar_module_test