TF-3586: Upgrade Flutter to 3.27.4

lib/features/base/mixin/handle_error_mixin.dart

@@ -1,4 +1,3 @@
-import 'package:collection/collection.dart';
 import 'package:core/core.dart';
 import 'package:dartz/dartz.dart';
 import 'package:jmap_dart_client/jmap/core/error/set_error.dart';
@@ -57,7 +56,7 @@ mixin HandleSetErrorMixin {
   }
 
   Map<Id, SetError> handleSetResponse(List<SetResponse?> listSetResponse) {
-    final listSetResponseNotNull = listSetResponse.whereNotNull().toList();
+    final listSetResponseNotNull = listSetResponse.nonNulls.toList();
     if (listSetResponseNotNull.isEmpty) {
       return <Id, SetError>{};
     }

lib/features/base/mixin/popup_context_menu_action_mixin.dart

@@ -40,7 +40,7 @@ mixin PopupContextMenuActionMixin {
         ),
       ),
       backgroundColor: Colors.white,
-      barrierColor: Colors.black.withOpacity(0.2),
+      barrierColor: Colors.black.withValues(alpha: 0.2),
       builder: (_) {
         return PointerInterceptor(
           child: Container(