74452 [flutter_tools] provide correct sources and metadata for different base hrefs (cla: yes, tool, waiting for tree to go green)

74454 Space and arrow keys in a text field shouldn’t scroll (a: text input, cla: yes, f: cupertino, f: material design, framework, waiting for tree to go green)

74455 Create custom DiagnosticsNode type for DevTools deep links. (cla: yes, framework)

74456 Roll Plugins from 07cf89a08b88 to 6fa2ead23e8d (2 revisions) (cla: yes, waiting for tree to go green)

74459 Remove devicelab mac android tasks from manifest.yaml (cla: yes, team)

74463 Remove build_gallery tests (cla: yes, team, waiting for tree to go green)