Convert index blocks to cluster block exceptions (#27050)

core/src/main/java/org/elasticsearch/action/admin/indices/template/delete/TransportDeleteIndexTemplateAction.java

@@ -62,7 +62,7 @@ public class TransportDeleteIndexTemplateAction extends TransportMasterNodeActio
 
     @Override
     protected ClusterBlockException checkBlock(DeleteIndexTemplateRequest request, ClusterState state) {
-        return state.blocks().indexBlockedException(ClusterBlockLevel.METADATA_WRITE, "");
+        return state.blocks().globalBlockedException(ClusterBlockLevel.METADATA_WRITE);
     }
 
     @Override

core/src/main/java/org/elasticsearch/action/admin/indices/template/put/TransportPutIndexTemplateAction.java

@@ -66,7 +66,7 @@ public class TransportPutIndexTemplateAction extends TransportMasterNodeAction<P
 
     @Override
     protected ClusterBlockException checkBlock(PutIndexTemplateRequest request, ClusterState state) {
-        return state.blocks().indexBlockedException(ClusterBlockLevel.METADATA_WRITE, "");
+        return state.blocks().globalBlockedException(ClusterBlockLevel.METADATA_WRITE);
     }
 
     @Override