LBAC for data sources: PublicPreview and self serve enablement (#102276)

* Publicpreview and self serve of lbac for mimir

* update from review

pkg/services/featuremgmt/registry.go

@@ -1604,9 +1604,9 @@ var (
 		{
 			Name:           "teamHttpHeadersMimir",
 			Description:    "Enables LBAC for datasources for Mimir to apply LBAC filtering of metrics to the client requests for users in teams",
-			Stage:          FeatureStageExperimental,
+			Stage:          FeatureStagePublicPreview,
 			FrontendOnly:   false,
-			AllowSelfServe: false,
+			AllowSelfServe: true,
 			Owner:          identityAccessTeam,
 		},
 		{

pkg/services/featuremgmt/toggles_gen.csv

@@ -212,7 +212,7 @@ investigationsBackend,experimental,@grafana/grafana-app-platform-squad,false,fal
 k8SFolderCounts,experimental,@grafana/search-and-storage,false,false,false
 k8SFolderMove,experimental,@grafana/search-and-storage,false,false,false
 improvedExternalSessionHandlingSAML,preview,@grafana/identity-access-team,false,false,false
-teamHttpHeadersMimir,experimental,@grafana/identity-access-team,false,false,false
+teamHttpHeadersMimir,preview,@grafana/identity-access-team,false,false,false
 ABTestFeatureToggleA,experimental,@grafana/sharing-squad,false,false,false
 templateVariablesUsesCombobox,experimental,@grafana/grafana-frontend-platform,false,false,true
 ABTestFeatureToggleB,experimental,@grafana/sharing-squad,false,false,false

pkg/services/featuremgmt/toggles_gen.json

@@ -4040,13 +4040,17 @@
     {
       "metadata": {
         "name": "teamHttpHeadersMimir",
-        "resourceVersion": "1736763800062",
-        "creationTimestamp": "2025-01-13T10:42:47Z"
+        "resourceVersion": "1742208227420",
+        "creationTimestamp": "2025-01-13T10:42:47Z",
+        "annotations": {
+          "grafana.app/updatedTimestamp": "2025-03-17 10:43:47.420599 +0000 UTC"
+        }
       },
       "spec": {
         "description": "Enables LBAC for datasources for Mimir to apply LBAC filtering of metrics to the client requests for users in teams",
-        "stage": "experimental",
-        "codeowner": "@grafana/identity-access-team"
+        "stage": "preview",
+        "codeowner": "@grafana/identity-access-team",
+        "allowSelfServe": true
       }
     },
     {