dsdb: Use DSDB_SEARCH_SHOW_EXTENDED_DN when searching for the local replicated object

dsdb: Use DSDB_SEARCH_SHOW_EXTENDED_DN when searching for the local replicated object

This may allow further processing when the DN normalisation has changed
which changes the indexing, such as seen after fixes for bug 14656.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14656
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14902

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
(cherry picked from commit f621317e3b25a8925ab6e448068264488a0a47c7)

Autobuild-User(v4-13-test): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(v4-13-test): Wed Dec  8 16:49:25 UTC 2021 on sn-devel-184