Merge PR #62436 into wip-jcollin-testing-20250925.075511-reef

* refs/pull/62436/head:
	PendingReleaseNote: add note for pause_purging and pause_cloninig
	doc/cephfs: add note for config option pause_purging and pause_cloning
	qa/cephfs: add tests for mgr/vol config pause_cloning
	qa/cephfs: extend wait for trash empty
	qa/cephfs: add tests for config option pause_purging
	qa/cephfs: don't strip any whitespace for get_shell_stdout
	mgr/vol: add pause/resume mechanism for async jobs