refactor: 修改导航新增唯一标识处理

app/admin/controller/v1/Navigation.php

@@ -75,12 +75,16 @@ class Navigation
     public function save()
     {
         $post = request()->post([
+            'unique_label' => '',
             'name',
             'at_platform' => 'pc',
             'desc',
             'status' => 1
         ]);
-        $data = array_merge($post, ['language_id' => request()->lang_id, 'unique_label' => uniqid("NAV_")]);
+        if (empty($post['unique_label'])) {
+            $post['unique_label'] = uniqid("NAV_");
+        }
+        $data = array_merge($post, ['language_id' => request()->lang_id]);
 
         $validate = new NavigationValidate;
         if (!$validate->scene('add')->check($data)) {