fix(widgets): add refetchInterval to WidgetDefinition for per-widget polling (#6352)

packages/widgets/src/notifications/index.ts

@@ -7,6 +7,7 @@ import { optionsBuilder } from "../options";
 
 export const { componentLoader, definition } = createWidgetDefinition("notifications", {
   icon: IconMessage,
+  refetchInterval: null,
   createOptions() {
     return optionsBuilder.from((factory) => ({
       hideLogos: factory.switch({ defaultValue: false }),