chore: update datatrails feature flag and enable (#85508)

* chore: update datatrails feature flag and enable

* fix: rename `datatrails` feature flag to `exploreMetrics`

pkg/services/featuremgmt/registry.go

@@ -972,12 +972,12 @@ var (
 			Owner:        grafanaObservabilityTracesAndProfilingSquad,
 		},
 		{
-			Name:         "datatrails",
-			Description:  "Enables the new core app datatrails",
-			Stage:        FeatureStageExperimental,
+			Name:         "exploreMetrics",
+			Description:  "Enables the new Explore Metrics core app",
+			Stage:        FeatureStageGeneralAvailability,
+			Expression:   "true", // enabled by default
 			FrontendOnly: true,
 			Owner:        grafanaDashboardsSquad,
-			HideFromDocs: true,
 		},
 		{
 			Name:         "alertingSimplifiedRouting",

pkg/services/featuremgmt/toggles_gen.csv

@@ -130,7 +130,7 @@ ssoSettingsApi,preview,@grafana/identity-access-team,false,false,false
 canvasPanelPanZoom,preview,@grafana/dataviz-squad,false,false,true
 logsInfiniteScrolling,experimental,@grafana/observability-logs,false,false,true
 flameGraphItemCollapsing,experimental,@grafana/observability-traces-and-profiling,false,false,true
-datatrails,experimental,@grafana/dashboards-squad,false,false,true
+exploreMetrics,GA,@grafana/dashboards-squad,false,false,true
 alertingSimplifiedRouting,GA,@grafana/alerting-squad,false,false,false
 logRowsPopoverMenu,GA,@grafana/observability-logs,false,false,true
 pluginsSkipHostEnvVars,experimental,@grafana/plugins-platform-backend,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -531,9 +531,9 @@ const (
 	// Allow collapsing of flame graph items
 	FlagFlameGraphItemCollapsing = "flameGraphItemCollapsing"
 
-	// FlagDatatrails
-	// Enables the new core app datatrails
-	FlagDatatrails = "datatrails"
+	// FlagExploreMetrics
+	// Enables the new Explore Metrics core app
+	FlagExploreMetrics = "exploreMetrics"
 
 	// FlagAlertingSimplifiedRouting
 	// Enables users to easily configure alert notifications by specifying a contact point directly when editing or creating an alert rule

pkg/services/navtree/navtreeimpl/navtree.go

@@ -465,7 +465,7 @@ func (s *ServiceImpl) buildDataConnectionsNavLink(c *contextmodel.ReqContext) *n
 
 func (s *ServiceImpl) buildExploreNavLinks(c *contextmodel.ReqContext) []*navtree.NavLink {
 	exploreChildNavs := []*navtree.NavLink{}
-	if s.features.IsEnabled(c.Req.Context(), featuremgmt.FlagDatatrails) {
+	if s.features.IsEnabled(c.Req.Context(), featuremgmt.FlagExploreMetrics) {
 		exploreChildNavs = append(exploreChildNavs, &navtree.NavLink{
 			Text:     "Metrics",
 			SubTitle: "Queryless exploration of your metrics",