Plugin Extension: improves mutation logs (#107370)

* Plugin Extension: improves  mutation logs

* chore: removes feature toggle

* chore: rename function

packages/grafana-data/src/types/featureToggles.gen.ts

@@ -976,10 +976,6 @@ export interface FeatureToggles {
   */
   alertingBulkActionsInUI?: boolean;
   /**
-  * Use proxy-based read-only objects for plugin extensions instead of deep cloning
-  */
-  extensionsReadOnlyProxy?: boolean;
-  /**
   * Registers AuthZ /apis endpoint
   */
   kubernetesAuthzApis?: boolean;