Update changelog for 3.27.3 release (flutter#161963)

Update changelog for 3.27.3 release

[flutter_releases] Flutter stable 3.27.2 Framework Cherrypicks (flutt…

…er#161524)

# Flutter stable 3.27.2 Framework

## Scheduled Cherrypicks

Roll Flutter Engine from 8535ce3 to 6a75cb6 (1 revision) (flutter#160450

)

flutter/engine@8535ce3...6a75cb6

2024-12-17 mdebbar@google.com [web] Reland: (Add `crossOrigin` property
to `<img>` tag used for decoding)++ (flutter/engine#57228)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC jacksongardner@google.com,zra@google.com on the revert to
ensure that a human
is aware of the problem.

To file a bug in Flutter:
https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

[flutter_releases] Flutter stable 3.27.1 Framework Cherrypicks (flutt…

…er#160293)

# Flutter stable 3.27.1 Framework

## Scheduled Cherrypicks

[flutter_releases] Flutter beta 3.28.0-0.1.pre Framework Cherrypicks (f…

…lutter#160112)

# Flutter beta 3.28.0-0.1.pre Framework

## Scheduled Cherrypicks

[flutter_releases] Flutter stable 3.27.0 Framework Cherrypicks (flutt…

…er#160045)

# Flutter stable 3.27.0 Framework

Add `flutter widget-preview {start, clean}` commands (flutter#159510)

This is the initial tooling work for Flutter Widget Previews, adding two
commands: `flutter widget-preview start` and `flutter widget-preview
clean`.

The `start` command currently only checks to see if
`.dart_tool/widget_preview_scaffold/` exists and creates a new Flutter
project using the widget_preview_scaffold template if one isn't found.
The widget_preview_scaffold template currently only contains some
placeholder files and will be updated to include additional code
required by the scaffold.

The `clean` command simply deletes `.dart_tool/widget_preview_scaffold/`
if it's found.

This change also includes some refactoring of the `create` command in
order to share some project creation logic without requiring `flutter
widget-preview start` to spawn a new process simply to run `flutter
create -t widget_preview .dart_tool/widget_preview_scaffold`.

Related issue: flutter#115704

---------

Co-authored-by: Andrew Kolos <andrewrkolos@gmail.com>

[flutter_releases] Flutter beta 3.27.0-0.2.pre Framework Cherrypicks (f…

…lutter#158943)

# Flutter beta 3.27.0-0.2.pre Framework

[flutter_releases] Flutter stable 3.24.5 Framework Cherrypicks (flutt…

…er#158778)

# Flutter stable 3.24.5 Framework

[CP-stable]Assert macOS framework artifact contains xcprivacy manifest (

flutter#155556)

This is the framework-side test for flutter/engine#55366.  This test will fail unless it is run on a roll containing that fix.

### Issue Link:
flutter#154915

### Changelog Description:
Test that a built macOS app contains the FlutterMacOS framework privacy manifest and validates flutter/engine#55366.

### Impact Description:
Adds confidence the Flutter macOS engine framework contains the expected privacy manifest at the right path.

### Workaround:
N/A

### Risk:
What is the risk level of this cherry-pick?

### Test Coverage:
Are you confident that your fix is well-tested by automated tests?

### Validation Steps:
Run the flutter_tool tests