Currently, the licenses are copied into the bucket just before
uploading it. Copying the licenses is definitely more about "building"
the bucket than it is about "processing the CIPD package", but
concretely, some tools complain if the license files arent there, and
I'd like to be able to use the cipd tool to upload the bucket
directly.
Co-authored-by: NHunter Freyer <hjfreyer@google.com>

Current recommended build methods may not trigger this issue, but
while trying different options, building flutter for the first time, I
noticed a build error because `defines` was assigned twice.

If building with both options is ever supported, I think this
fixes the error.

Ensure that AutoIsolateShutdown drops its reference to the DartIsolate on the intended task runner (#25899)

* Roll buildroot to pick change to cppwinrt invocation

* disable uwp builders

Makes Win32 stop redispatching ShiftRight keydown event even if the framework does not handle it.

It broke an integration test on the framework side.

This reverts commit aa2672ff.

This reverts commit 23cd8e54.

* auto-enable semantics

* fix a11y placeholder on desktop

Fix crash when both FlutterFragmentActivity and FlutterFragment are destroyed and recreated (#25851)

* Revert "Roll Dart SDK from 3cc6cdab8eaf to b8f4018535fa (2 revisions) (#25885)"

This reverts commit d84caa73.

* Revert "Roll Dart SDK from 6ecae204598d to 3cc6cdab8eaf (2 revisions) (#25877)"

This reverts commit 03bd2e35.

* Revert "Roll Dart SDK from b98a1eec5eb5 to 6ecae204598d (1 revision) (#25874)"

This reverts commit 7ce62261.

* Revert "Roll Dart SDK from 8c109a734bdc to b98a1eec5eb5 (1 revision) (#25873)"

This reverts commit e623c095.

* Revert "Roll Dart SDK from ee8eb0a65efa to 8c109a734bdc (1 revision) (#25872)"

This reverts commit 01b9db82.

* Revert "Roll Dart SDK from 6397e8b91103 to ee8eb0a65efa (1 revision) (#25869)"

This reverts commit 4aae6b32.

* Revert "Roll Dart SDK from 1e3e5efcd47e to 6397e8b91103 (18 revisions) (#25861)"

This reverts commit 74ac0103.