69237 [flutter_tools] fix –use-existing-app for flutter drive (cla: yes, team, tool)

69241 Revert “Updated SearchDelegate to follow custom InputDecorationTheme (#55209)” (cla: yes, f: material design, framework, waiting for tree to go green)

69244 [flutter_tools] support ws scheme in use-existing-app (cla: yes, tool)

69245 Show macOS arm64 architecture in doctor and devices list (cla: yes, platform-mac, tool, waiting for tree to go green)

69246 [flutter_tools] conditionally invoke pub run test for drive scripts based on presence of dependency (cla: yes, tool)

69251 AppBar draws its defaults from theme.colorScheme (cla: yes, f: material design, framework)