♻️ Add event bus to more places

lib/widgets/post/compose_sheet.dart

@@ -6,7 +6,6 @@ import 'package:island/models/file.dart';
 import 'package:island/models/post.dart';
 import 'package:island/screens/posts/compose.dart';
 import 'package:island/services/compose_storage_db.dart';
-import 'package:island/services/event_bus.dart';
 import 'package:island/widgets/content/sheet.dart';
 import 'package:island/widgets/post/compose_card.dart';
 import 'package:island/widgets/post/compose_settings_sheet.dart';
@@ -124,8 +123,6 @@ class PostComposeSheet extends HookConsumerWidget {
         repliedPost: repliedPost,
         forwardedPost: forwardedPost,
         onSuccess: () {
-          // Fire event to notify listeners that a post was created
-          eventBus.fire(PostCreatedEvent());
           Navigator.of(context).pop(true);
         },
       );
@@ -162,8 +159,6 @@ class PostComposeSheet extends HookConsumerWidget {
         initialState: restoredInitialState.value ?? initialState,
         onCancel: () => Navigator.of(context).pop(),
         onSubmit: () {
-          // Fire event to notify listeners that a post was created
-          eventBus.fire(PostCreatedEvent());
           Navigator.of(context).pop(true);
         },
         isContained: true,