Mute DownsampleActionSingleNodeTests.testCannotRollupWhileOtherRollupInProgress (#90198)

See https://github.com/elastic/elasticsearch/issues/90197

x-pack/plugin/rollup/src/test/java/org/elasticsearch/xpack/downsample/DownsampleActionSingleNodeTests.java

@@ -496,6 +496,7 @@ public class DownsampleActionSingleNodeTests extends ESSingleNodeTestCase {
         assertThat(exception.getMessage(), containsString("no such index [missing-index]"));
     }
 
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/90197")
     public void testCannotRollupWhileOtherRollupInProgress() throws Exception {
         DownsampleConfig config = new DownsampleConfig(randomInterval());
         SourceSupplier sourceSupplier = () -> XContentFactory.jsonBuilder()