Merge changes from topic "cherrypicker-L98100030004859837:N50500030076512633" into 24D1-dev

* changes:
  Security fix for VPN app killable via lockscreen.
  Ensure device_owners2.xml is always written.
  Add unit test to test data overflow when using BinaryXmlSerializer
  Restrict USB poups while setup is in progress
  Rate limiting PiP aspect ratio change request
  Fix READ/WRITE operation access issues on Restricted appOps.
  Hide SAW subwindows