Merge changes from topics "High FRR - notification", "revert-24295111-High FRR...

Merge changes from topics "High FRR - notification", "revert-24295111-High FRR - notification-JTFUNRYWXL" into udc-qpr-dev

* changes:
  [6/n] FRR presubmit annotation
  [5/n] FRR notification strings update
  Fix NPE caused by [4/n] FRR data cleanup
  Revert "Revert "[4/n] FRR data cleanup""