💄 Optimize post subscription filter card

assets/i18n/en-US.json

@@ -1541,5 +1541,6 @@
     "settingsDashSearchEngineHelper": "Use %s as the placeholder for the query.",
     "settingsDefaultScreen": "Default Screen",
     "notableDayChristmas": "Christmas",
-    "notableDayNewYear": "New Year"
+    "notableDayNewYear": "New Year",
+    "noSubscription": "No subscriptions"
 }

lib/widgets/posts/post_subscription_filter.dart

@@ -169,7 +169,8 @@ class PostSubscriptionFilterWidget extends HookConsumerWidget {
             ),
           ),
 
-          const Divider(height: 1).padding(vertical: 8),
+          if (publishersAsync.value?.isNotEmpty ?? false)
+            const Divider(height: 1).padding(vertical: 8),
 
           // Categories Section
           categoriesAsync.when(