Merge PR #55792 into main

* refs/pull/55792/head:
	tools/cephfs: recover alternate_name of dentries from journal
	qa: add test to verify recovery of alternate_name from journal
	tools/cephfs/JournalTool: add some more debugging
	tools/cephfs/JournalTool: remove extraneous 0x in debug output
	mds: dump alternate_name to formatter
	mds: add warning about encoding new fields

Reviewed-by: Christopher Hoffman <choffman@redhat.com>
Reviewed-by: Xiubo Li <xiubli@redhat.com>