chore : Deprecating FeatureToggles.IsEnabledGlobally (#112885)

* add deprecation on featuremgmt.IsEnabledGlobally

* add nolint reason

* add reasonable deprecation message

* remove junk edits

* add more nolints

* addressing review comments

* Update pkg/services/featuremgmt/models.go

Co-authored-by: Dave Henderson <dave.henderson@grafana.com>

---------

Co-authored-by: Dave Henderson <dave.henderson@grafana.com>

pkg/services/star/api/api.go

@@ -27,6 +27,7 @@ func ProvideApi(
 	starService star.Service,
 	configProvider apiserver.DirectRestConfigProvider,
 ) *API {
+	//nolint:staticcheck // not yet migrated to OpenFeature
 	if features.IsEnabledGlobally(featuremgmt.FlagKubernetesStars) {
 		starService = nil // don't use it
 	}