28926 fuchsia: Add FakeFlatland and tests (affects: tests, cla: yes, platform-fuchsia)

29048 fuchsia: Enable AOT builds of Dart test packages (affects: tests, cla: yes, platform-fuchsia)

29259 fuchsia: Add graph to FakeFlatland (affects: tests, cla: yes, platform-fuchsia)

29414 fuchsia: Enable ASAN; add tests flag (affects: tests, cla: yes, platform-fuchsia)

tech-debt - 4 pull request(s)

27472 Remove dead localization code from the iOS embedder (platform-ios, cla: yes, waiting for tree to go green, tech-debt)