Merge PR #52944 into main

Merge PR #52944 into main

* refs/pull/52944/head:
	PendingReleaseNotes: add a note for `mds_session_metadata_threshold` mds config
	test: add test to verify that a buggy client is blocklisted
	mds: add perf counter to track number of sessions evicted due to metadata threshold being exceeded
	mds: blocklist clients with "bloated" session metadata

Reviewed-by: Robin H. Johnson <robbat2@orbis-terrarum.net>
Reviewed-by: Dhairya Parmar <dparmar@redhat.com>
Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>