feat: show subscription tier below name on cloud (#7356)

## Summary

<img width="427" height="557" alt="image"
src="https://github.com/user-attachments/assets/1183e741-762d-4e52-b24a-77c976e5ad5f"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7356-feat-show-subscription-tier-below-name-on-cloud-2c66d73d365081829576c276bb5762ac)
by [Unito](https://www.unito.io)

src/components/topbar/CurrentUserPopover.vue

@@ -21,6 +21,9 @@
       <p v-if="userEmail" class="my-0 truncate text-sm text-muted">
         {{ userEmail }}
       </p>
+      <p v-if="subscriptionTierName" class="my-0 truncate text-sm text-muted">
+        {{ subscriptionTierName }}
+      </p>
     </div>
 
     <!-- Credits Section -->
@@ -160,7 +163,8 @@ const { userDisplayName, userEmail, userPhotoUrl, handleSignOut } =
 const authActions = useFirebaseAuthActions()
 const authStore = useFirebaseAuthStore()
 const dialogService = useDialogService()
-const { isActiveSubscription, fetchStatus } = useSubscription()
+const { isActiveSubscription, subscriptionTierName, fetchStatus } =
+  useSubscription()
 const { flags } = useFeatureFlags()
 const { locale } = useI18n()