MDEV-23659: Update Galera disabled.def file

Disable galera_var_replicate_myisam until fixed on 10.4

mysql-test/suite/galera/disabled.def

@@ -16,6 +16,7 @@ MDEV-16509 : MDEV-21523 galera.MDEV-16509
 MDEV-20225 : MDEV-20886 galera.MDEV-20225
 MW-286 : MDEV-18464 Killing thread can cause mutex deadlock if done concurrently with Galera/replication victim kill
 MW-328A : MDEV-22666 galera.MW-328A MTR failed: "Semaphore wait has lasted > 600 seconds" and do not release port 16002
+MW-328A : MDEV-22666?
 MW-328B : MDEV-22666 galera.MW-328A MTR failed: "Semaphore wait has lasted > 600 seconds" and do not release port 16002
 MW-329 : MDEV-19962 Galera test failure on MW-329
 galera.galera_defaults : MDEV-21494 Galera test sporadic failure on galera.galera_defaults
@@ -40,6 +41,7 @@ galera_toi_truncate : MDEV-22996 Hang on galera_toi_truncate test case
 galera_var_node_address : MDEV-20485 Galera test failure
 galera_var_notify_cmd : MDEV-21905 Galera test galera_var_notify_cmd causes hang
 galera_var_reject_queries : assertion in inline_mysql_socket_send
+galera_var_replicate_myisam_on : MDEV-24062 Galera test failure on galera_var_replicate_myisam_on
 galera_var_retry_autocommit: MDEV-18181 Galera test failure on galera.galera_var_retry_autocommit
 galera_wan : MDEV-17259 Test failure on galera.galera_wan
 lp1376747-4 : MDEV-21911 Galera test failure on lp1376747-4
@@ -47,4 +49,3 @@ partition : MDEV-19958 Galera test failure on galera.partition
 query_cache: MDEV-15805 Test failure on galera.query_cache
 sql_log_bin : MDEV-21491 galera.sql_log_bin
 versioning_trx_id : MDEV-18590 galera.versioning_trx_id
-MW-328A : MDEV-22666?