79520 Remove the warning about the Integration Test plugin (cla: yes, team, tool, waiting for tree to go green)

79521 [flutter_tools] Normalize test file paths before using them (cla: yes, tool, waiting for tree to go green)

79525 Migrate analysis to null safety (a: null-safety, cla: yes, team, tool)

79560 Revert “Mark ios32 device tests flaky to reopen build.” (cla: yes, team)

79561 Mark integration_test_test as flaky (cla: yes, team, waiting for tree to go green)

79562 remove unnecessary trailing commas (cla: yes, f: cupertino, f: material design, framework)

79566 [flutter_tools] use Url path.Context for joining URI (cla: yes, tool, waiting for tree to go green)