SSE: Put data source query grouping behind feature flag (#74551)

change was originally merged in commit: 720d716 via PR: https://github.com/grafana/grafana/pull/72935 with no flag
flag is: sseGroupByDatasource

pkg/services/featuremgmt/registry.go

@@ -731,5 +731,11 @@ var (
 			Owner:        grafanaFrontendPlatformSquad,
 			FrontendOnly: true,
 		},
+		{
+			Name:        "sseGroupByDatasource",
+			Description: "Send query to the same datasource in a single request when using server side expressions",
+			Stage:       FeatureStageExperimental,
+			Owner:       grafanaObservabilityMetricsSquad,
+		},
 	}
 )

pkg/services/featuremgmt/toggles_gen.csv

@@ -104,3 +104,4 @@ angularDeprecationUI,experimental,@grafana/plugins-platform-backend,false,false,
 dashgpt,experimental,@grafana/dashboards-squad,false,false,false,true
 reportingRetries,preview,@grafana/sharing-squad,false,false,true,false
 newBrowseDashboards,preview,@grafana/grafana-frontend-platform,false,false,false,true
+sseGroupByDatasource,experimental,@grafana/observability-metrics,false,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -426,4 +426,8 @@ const (
 	// FlagNewBrowseDashboards
 	// New browse/manage dashboards UI
 	FlagNewBrowseDashboards = "newBrowseDashboards"
+
+	// FlagSseGroupByDatasource
+	// Send query to the same datasource in a single request when using server side expressions
+	FlagSseGroupByDatasource = "sseGroupByDatasource"
 )