galera: updating the list of disabled tests

Author: sysprg

mysql-test/suite/galera/disabled.def

@@ -24,4 +24,4 @@ galera_sst_mysqldump_with_key : MDEV-32782 galera_sst_mysqldump_with_key test fa
 mdev-31285 : MDEV-25089 Assertion `error.len > 0' failed in galera::ReplicatorSMM::handle_apply_error()
 galera_var_ignore_apply_errors : MENT-1997 galera_var_ignore_apply_errors test freezes
 MW-402 : temporarily disabled at the request of Codership
-MDEV-22232 : temporarily disabled at the request of Codership
+galera_desync_overlapped : MDEV-21538 galera_desync_overlapped MTR failed: Result content mismatch