25473 TextField.onChanged() doc update (a: text input, cla: yes, d: api docs, framework)

25474 fix some formatting issues (a: animation, cla: yes, f: cupertino, framework, team)

25477 TransitionRoute.canTransitionFrom,To() doc update (cla: yes, d: api docs, f: routes, framework)

25479 Depend on the goldens repo through git. (a: tests, cla: yes, tool)

25482 Mark flaky tests as such (a: tests, cla: yes)

25483 Update examples to match the new version of generated build.gradle (cla: yes, d: examples)

25484 Fix gradle local.properties tests that were never excersized (cla: yes, t: gradle, tool)