xfs: allow SECURE namespace xattrs to use reserved block pool

Pavel Reichlrequested to merge
preichl1/centos-stream-9:rhel_49806 into main

JIRA: https://issues.redhat.com/browse/RHEL-49806

Upstream Status: RHEL-only

Signed-off-by: Pavel Reichl preichl@redhat.com

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