refactor: Make methods shorter

lib/pages/user_bottom_sheet/user_bottom_sheet.dart

@@ -86,10 +86,7 @@ class UserBottomSheetController extends State<UserBottomSheet> {
       case 'message':
         final roomIdResult = await showFutureLoadingDialog(
           context: context,
-          future: () async {
-            final roomId = await widget.user.startDirectChat();
-            return roomId;
-          },
+          future: () => widget.user.startDirectChat(),
         );
         if (roomIdResult.error != null) return;
         VRouter.of(widget.outerContext)

lib/widgets/profile_bottom_sheet.dart

@@ -25,10 +25,7 @@ class ProfileBottomSheet extends StatelessWidget {
     final client = Matrix.of(context).client;
     final result = await showFutureLoadingDialog<String>(
       context: context,
-      future: () async {
-        final roomId = await client.startDirectChat(userId);
-        return roomId;
-      },
+      future: () => client.startDirectChat(userId),
     );
     if (result.error == null) {
       VRouter.of(context).toSegments(['rooms', result.result]);