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Merge changes from topic "backup-restore" into androidx-main

* changes:
  Add backup-host module scaffolding & core JVM interfaces
  Update verification metadata for apiguardian
  Add backup module scaffolding & core action interfaces
A
android-test-infra-autosubmit@system.gserviceaccount.com committed
6144d5364a053a3a7f3bc55e966ba5f00fa50cd4
Committed by Gerrit Code Review <noreply-gerritcodereview@google.com> on 8/28/2026, 7:46:07 AM