fix: always use en locale for parsing timeline datetime (#21796)

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>

mobile/lib/infrastructure/repositories/timeline.repository.dart

@@ -595,7 +595,7 @@ extension on String {
       GroupAssetsBy.none => throw ArgumentError("GroupAssetsBy.none is not supported for date formatting"),
     };
     try {
-      return DateFormat(format).parse(this);
+      return DateFormat(format, 'en').parse(this);
     } catch (e) {
       throw FormatException("Invalid date format: $this", e);
     }