Merge changes from topics "presubmit-am-7250e98934bc40cbaa91f4d3fe499617",...

Merge changes from topics "presubmit-am-7250e98934bc40cbaa91f4d3fe499617", "presubmit-am-a05bb8af1eb24cd390463ad38288dc31" into tm-dev

* changes:
  Rework system event animations to a federated model
  Don't transition to ongoing privacy dot if still animating