Mute RareClusterStateIT#testDelayedMappingPropagationOnPrimary as we await a fix.

Tracked in #41030.

server/src/test/java/org/elasticsearch/cluster/coordination/RareClusterStateIT.java

@@ -181,6 +181,7 @@ public class RareClusterStateIT extends ESIntegTestCase {
         assertHitCount(client().prepareSearch("test").get(), 0);
     }
 
+    @AwaitsFix(bugUrl="https://github.com/elastic/elasticsearch/issues/41030")
     public void testDelayedMappingPropagationOnPrimary() throws Exception {
         // Here we want to test that things go well if there is a first request
         // that adds mappings but before mappings are propagated to all nodes