Fix UT errors

Author: julian-elastic

x-pack/plugin/esql/qa/server/multi-clusters/src/javaRestTest/java/org/elasticsearch/xpack/esql/ccq/MultiClustersIT.java

@@ -430,6 +430,14 @@ public void testLikeIndex() throws Exception {
     }
 
     public void testLikeIndexLegacySettingNoResults() throws Exception {
+        boolean isSupported = clusterHasCapability("POST", "/_query", List.of(), List.of("like_on_index_fields")).orElse(false);
+        if (isSupported == false) {
+            // we require that the admin client supports the like_on_index_fields capability
+            // otherwise we will get an error when trying to toggle the setting
+            // the remote client does not have to support it
+            logger.info("-->  skipping testLikeIndexLegacySettingNoResults, due to missing capability");
+            return;
+        }
         try (ClusterSettingToggle ignored = new ClusterSettingToggle(adminClient(), "esql.query.string_like_on_index", false, true)) {
             // test code with the setting changed
             boolean includeCCSMetadata = includeCCSMetadata();
@@ -447,6 +455,14 @@ public void testLikeIndexLegacySettingNoResults() throws Exception {
     }
 
     public void testLikeIndexLegacySettingResults() throws Exception {
+        boolean isSupported = clusterHasCapability("POST", "/_query", List.of(), List.of("like_on_index_fields")).orElse(false);
+        if (isSupported == false) {
+            // we require that the admin client supports the like_on_index_fields capability
+            // otherwise we will get an error when trying to toggle the setting
+            // the remote client does not have to support it
+            logger.info("-->  skipping testLikeIndexLegacySettingNoResults, due to missing capability");
+            return;
+        }
         try (ClusterSettingToggle ignored = new ClusterSettingToggle(adminClient(), "esql.query.string_like_on_index", false, true)) {
             boolean includeCCSMetadata = includeCCSMetadata();
             Map<String, Object> result = run("""