[flutter_tools] migrate some files to null safety by @jonahwilliams in https://github.com/flutter/flutter/pull/110354

Show output from pub get in flutter pub get by @sigurdm in https://github.com/flutter/flutter/pull/106300

Revert “Show output from pub get in flutter pub get” by @zanderso in https://github.com/flutter/flutter/pull/110478

[flutter_tools] Pull more arm64 artifacts on Apple Silicon by @zanderso in https://github.com/flutter/flutter/pull/110291

[flutter_tools] migrate gradle errors and project test to null safety by @jonahwilliams in https://github.com/flutter/flutter/pull/110530