PluginExtensions: Made it possible to enable extensions admin page in non-development environments (#95820)

* Added feature flag for toggling extensions admin page.

* fixed typo.

* require restart

---------

Co-authored-by: Erik Sundell <erik.sundell87@gmail.com>

pkg/services/featuremgmt/toggles_gen.json

@@ -1201,6 +1201,22 @@
         "frontend": true
       }
     },
+    {
+      "metadata": {
+        "name": "enableExtensionsAdminPage",
+        "resourceVersion": "1730819353237",
+        "creationTimestamp": "2024-11-05T09:18:42Z",
+        "annotations": {
+          "grafana.app/updatedTimestamp": "2024-11-05 15:09:13.237578 +0000 UTC"
+        }
+      },
+      "spec": {
+        "description": "Enables the extension admin page regardless of development mode",
+        "stage": "experimental",
+        "codeowner": "@grafana/plugins-platform-backend",
+        "requiresRestart": true
+      }
+    },
     {
       "metadata": {
         "name": "enableNativeHTTPHistogram",