fix: not disabling the context menu on the browser (#861)

ui/flutter/lib/app/modules/task/controllers/task_controller.dart

@@ -1,4 +1,6 @@
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:get/get.dart';
 import 'package:gopeed/api/model/task.dart';
 
@@ -6,4 +8,20 @@ class TaskController extends GetxController {
   final tabIndex = 0.obs;
   final scaffoldKey = GlobalKey<ScaffoldState>();
   final selectTask = Rx<Task?>(null);
+
+  @override
+  void onInit() {
+    super.onInit();
+    if (kIsWeb) {
+      BrowserContextMenu.disableContextMenu();
+    }
+  }
+
+  @override
+  void onClose() {
+    super.onClose();
+    if (kIsWeb) {
+      BrowserContextMenu.enableContextMenu();
+    }
+  }
 }