39274 Use output dir instead of specific paths in assemble rules

39280 [flutter_tool] Use a timeout for xcode showBuildSettings

39358 surface errors from build runner

39445 [flutter_tool] Add onError callback to asyncGuard. Use it in Doctor

39524 Register flutterVersion service in flutter_tools.

39530 keep symbols for profile

39541 Handle single unsupported device

39555 Use feature flags to control build command visibility

39558 Filter error message from skip build script checks

39579 [flutter_tools] Add a timeout to another showBuildSettings command

39654 Use persisted build information to automatically clean old outputs

39699 Detecting when installing over MingW’s Git Bash, fixing paths