89600 Enable caching of CPU samples collected at application startup (tool, cla: yes, waiting for tree to go green)

89603 Update dartdoc to 3.0.0 (team, cla: yes, waiting for tree to go green)

89604 Implement operator = and hashcode for CupertinoThemeData (framework, cla: yes, f: cupertino, waiting for tree to go green)

89606 Directly specify keystore to prevent debug key signing flake in Deferred components integration test. (team, cla: yes, team: flakes, waiting for tree to go green, severe: flake)

89618 Run flutter_gallery ios tests on arm64 device (team, platform-ios, cla: yes, waiting for tree to go green)