style: Updated format to match dart/flutter style

Author: aanelson

lib/widgets/lightbox.dart

@@ -205,7 +205,7 @@ class _LightboxPageState extends State<_LightboxPage> {
 Route getLightboxRoute({
   required BuildContext context,
   required Message message,
-  required String src
+  required String src,
 }) {
   return AccountPageRouteBuilder(
     context: context,

lib/widgets/message_list.dart

@@ -381,7 +381,8 @@ class MessageWithSender extends StatelessWidget {
                 borderRadius: BorderRadius.all(Radius.circular(4))),
               width: 35,
               height: 35,
-              child: avatar)),
+              child: avatar,
+            )),
           Expanded(
             child: Column(
               crossAxisAlignment: CrossAxisAlignment.stretch,