This reverts commit e0ed12c7.

Remove dependency on package:collection by moving mergeSort into foundation/collections.dart (#59521)

This removes a dependency from Flutter (package:collection) by copying the implementation of mergeSort into Flutter's foundation/collections.dart.

Also, removed a reference to UnmodifiableSetView from the shortcuts code by just returning a copy instead.

After Dart VM change we are now required to use loadLibrary on an import whenever it is imported as deferred.

See: https://dart-review.googlesource.com/c/sdk/+/149613

Updates the tooling to use the GTK embedding, rather than the GLFW embedding:
- Adds new requirements to `doctor`
- Updates the app and plugin templates to make GTK-based runners and plugins
- Stops downloading and installing the GLFW artifacts

Final part of #54860, other than cleanup.

This command was previously used by the re-entrant build scripts in xcode_backend.sh and build.gradle. These have since been refactored to use flutter assemble.

Deprecation the command in preparation for removal in a future release of flutter. The only current use is a test on HHH

This will need to be moved, so we can skip for now to avoid issues around double uploading or changing the token config. The tool coverage is fairly steady and we're not losing any historical data.

[flutter_tools] ensure generated entrypoint matches test and web entrypoint language version (#59291)

Ensure that the language version of the test/web generated entrypoint matches the language version of the test file to run, or the overall package language version if no annotation is provided.

* Word substitutions

* ++

This reverts commit b3c237ce.

The flutter infra recipes got moved to a new location and we need to
update docs with links to the new locations.

Bug:
  https://github.com/flutter/flutter/issues/45630

This reverts commit e02265dd.

* Add instructions for updating a localized string

* gem_missing_localizations does nothing when I test this out, seems to not be required

* Explain generation of new locale strings

Revert "Prevent WhitelistingTextInputFormatter to return a empty string if the current value does not satisfy the formatter (#57264)" (#59221)

fixes #57802

For users without git installed, flutter on windows bundles mingit. This needs to be added to the PATH in the main script, not the executed script, so that it is available to the tool