Merge PR #46357 into main

* refs/pull/46357/head:
	PendingReleaseNotes: add reference to the new mdsmap max_xattr_size field
	qa/tasks/mgr/dashboard/test_health: Add 'max_xattr_size' to the mdsmap schema
	mds: prevent exceeding xattrs limits on initial set
	mds: prevent clients from exceeding the xattrs key/value limits
	mon: add new configuration to limit filesystem xattrs size

Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Venky Shankar <vshankar@redhat.com>