refactor: error message for notification subscription failure (calcom#23304)

* improve: error message for notification subscription failure

* suggestions

* Update WebPushContext.tsx

---------

Co-authored-by: Anik Dhabal Babu <81948346+anikdhabal@users.noreply.github.com>

Author: bandhan-majumder

packages/features/notifications/WebPushContext.tsx

@@ -71,7 +71,15 @@ export function WebPushProvider({ children }: ProviderProps) {
           }
         } catch (error) {
           console.error("Failed to subscribe:", error);
-          showToast("Failed to enable notifications", "error");
+          if (
+            error instanceof DOMException &&
+            error.name === "InvalidAccessError" &&
+            error.message.includes("applicationServerKey")
+          ) {
+            showToast("Please enable Google services for push messaging and try again", "error");
+          } else {
+            showToast("Failed to enable notifications", "error");
+          }
         } finally {
           setIsLoading(false);
         }