Explore: Unification of logs/metrics/traces user interface (#25890)

Removes "Metrics"/"Logs" mode switcher from Explore, allowing for both
metrics and logs queries at the same time.

Co-authored-by: kay delaney <kay@grafana.com>
(cherry picked from commit 64bc85963b)

pkg/tsdb/cloudwatch/log_actions.go

@@ -45,6 +45,14 @@ func (e *CloudWatchExecutor) executeLogActions(ctx context.Context, queryContext
 				return nil
 			}
 
+			if dataframe.Meta != nil {
+				dataframe.Meta.PreferredVisualization = "logs"
+			} else {
+				dataframe.Meta = &data.FrameMeta{
+					PreferredVisualization: "logs",
+				}
+			}
+
 			resultChan <- &tsdb.QueryResult{RefId: query.RefId, Dataframes: tsdb.NewDecodedDataFrames(data.Frames{dataframe})}
 			return nil
 		})