chore: update pin button after pinning / unpinning a message

lib/pages/chat/chat.dart

@@ -1856,7 +1856,10 @@ class ChatController extends State<ChatPageWithRoom>
     }
   }
 
-  void pinEvent() {
+  // #Pangea
+  // void pinEvent() {
+  Future<void> pinEvent() async {
+    // Pangea#
     final pinnedEventIds = room.pinnedEventIds;
     final selectedEventIds = selectedEvents.map((e) => e.eventId).toSet();
     final unpin = selectedEventIds.length == 1 &&
@@ -1866,10 +1869,16 @@ class ChatController extends State<ChatPageWithRoom>
     } else {
       pinnedEventIds.addAll(selectedEventIds);
     }
-    showFutureLoadingDialog(
+    // #Pangea
+    // showFutureLoadingDialog(
+    //   context: context,
+    //   future: () => room.setPinnedEvents(pinnedEventIds),
+    // );
+    await showFutureLoadingDialog(
       context: context,
       future: () => room.setPinnedEvents(pinnedEventIds),
     );
+    // Pangea#
   }
 
   Timer? _storeInputTimeoutTimer;

lib/pangea/toolbar/widgets/overlay_header.dart

@@ -109,10 +109,15 @@ class OverlayHeaderState extends State<OverlayHeader> {
                             icon: pinned
                                 ? const Icon(Icons.push_pin)
                                 : const Icon(Icons.push_pin_outlined),
-                            onPressed: controller.pinEvent,
+                            onPressed: () {
+                              controller
+                                  .pinEvent()
+                                  .then((_) => setState(() {}));
+                            },
                             tooltip: pinned ? l10n.unpin : l10n.pinMessage,
                             color: theme.colorScheme.primary,
                           ),
+
                         if (controller.canEditSelectedEvents &&
                             !controller.selectedEvents.first.isActivityMessage)
                           IconButton(