Mute FullClusterRestartIT#testSqlFailsOnIndexWithTwoTypes while we await a fix.

x-pack/qa/full-cluster-restart/src/test/java/org/elasticsearch/xpack/restart/FullClusterRestartIT.java

@@ -414,6 +414,7 @@ public class FullClusterRestartIT extends AbstractFullClusterRestartTestCase {
         }
     }
 
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/34774")
     public void testSqlFailsOnIndexWithTwoTypes() throws IOException {
         // TODO this isn't going to trigger until we backport to 6.1
         assumeTrue("It is only possible to build an index that sql doesn't like before 6.0.0",