[package_info] Register IntegrationTestPlugin in the example app. (fl…

…utter#3478)

This change registers the IntegrationTestPlugin in the example app, so test results are correctly reported back to FTL.

The end-to-end firebase tests for package_info haven't passed in a while (nor have been reported as broken before), but after this change, they start passing again.

[integration_test] Fix tests from changes to `flutter test` machine o…

…utput (flutter#3480)

Reland "[cross_file] Migrate to null-safety. (flutter#3452)" (flutter…

…#3469)

This reverts commit 4aacf97.

Reland "[cross_file] Migrate to null-safety. (flutter#3452)" (flutter…

…#3469)

This reverts commit 4aacf97.

[image_picker_platform_interface] fix test asset file location (flutt…

…er#3467)

[cross_file] Use Uri when calling package:http methods (flutter#3462)

The next version of package:http expects URIs. See dart-lang/http#507

[camera] Ensure that channel.invokeMethod runs on the main thread (fl…

…utter#3444)

[google_maps_flutter_web] Reverse Hole winding when needed (flutter#3440

)

The Web Version needs the holes in a polygon to be defined in the opposite direction to their parent polygon.

This change automatically reverses the definition of a hole, when needed.

In debug mode, it'll let the user know that the holes need to be wound differently.

Co-authored-by: Anton Borries <[email protected]>

Windows nullsafety prep (flutter#3442)

shared_preferences_windows depends on path_provider_windows, and both
use 'ffi'. This relaxes the 'ffi' version constraint on
shared_preferences_windows to allow path_provider_windows to be migrated
to null-safety (which requires updating to the nullsafe version of ffi).

Part of flutter/flutter#70229

combine release messages and versions (flutter#3435)