Merge PR #40234 into master

* refs/pull/40234/head:
	client: always register callbacks before mount()
	client: move SnapRealm methods to ClientSnapRealm.cc

Reviewed-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>

diff --cc src/client/Client.cc
Simple merge

diff --cc src/client/Client.h
Simple merge

diff --cc src/include/cephfs/libcephfs.h
Simple merge

diff --cc src/libcephfs.cc
Simple merge

diff --cc src/test/fs/test_ino_release_cb.cc
Simple merge