Elasticsearch: Add frozen indices search support (#36018)

* Revert "Revert "Elasticsearch: add frozen indices search support (#27472)" (#27726)"

This reverts commit 4c7131425b.

* Make label width a bit more consistent

* Add documentation for X-Pack & Frozen Indices support in Elasticsearch

* Change UI & docs casing

* create default empty dataframe

* Remove backticks and simplify regex

* small doc improvement

pkg/tsdb/elasticsearch/response_parser.go

@@ -67,7 +67,8 @@ func (rp *responseParser) getTimeSeries() (plugins.DataResponse, error) {
 		}
 
 		queryRes := plugins.DataQueryResult{
-			Meta: debugInfo,
+			Meta:       debugInfo,
+			Dataframes: plugins.NewDecodedDataFrames(data.Frames{}),
 		}
 		props := make(map[string]string)
 		err := rp.processBuckets(res.Aggregations, target, &queryRes, props, 0)