TF-2129 Fix cannot attach file on mobile

(cherry picked from commit b35f09069d5ac9379632f599419af0cda1d91cc7)

lib/features/upload/domain/model/mobile_file_upload.dart

@@ -0,0 +1,24 @@
+
+import 'package:equatable/equatable.dart';
+
+class MobileFileUpload with EquatableMixin {
+  final String fileName;
+  final String filePath;
+  final int fileSize;
+  final String mimeType;
+
+  MobileFileUpload(
+    this.fileName,
+    this.filePath,
+    this.fileSize,
+    this.mimeType
+  );
+
+  @override
+  List<Object?> get props => [
+    fileName,
+    filePath,
+    fileSize,
+    mimeType,
+  ];
+}