fix: 修复配额说明重复和undefined问题

- 在editStorageForm中初始化oss_storage_quota_value和oss_quota_unit
- 删除重复的旧配额说明块，保留新的当前配额设置显示

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/node_modules/methods/index.js

@@ -0,0 +1,69 @@
+/*!
+ * methods
+ * Copyright(c) 2013-2014 TJ Holowaychuk
+ * Copyright(c) 2015-2016 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict';
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var http = require('http');
+
+/**
+ * Module exports.
+ * @public
+ */
+
+module.exports = getCurrentNodeMethods() || getBasicNodeMethods();
+
+/**
+ * Get the current Node.js methods.
+ * @private
+ */
+
+function getCurrentNodeMethods() {
+  return http.METHODS && http.METHODS.map(function lowerCaseMethod(method) {
+    return method.toLowerCase();
+  });
+}
+
+/**
+ * Get the "basic" Node.js methods, a snapshot from Node.js 0.10.
+ * @private
+ */
+
+function getBasicNodeMethods() {
+  return [
+    'get',
+    'post',
+    'put',
+    'head',
+    'delete',
+    'options',
+    'trace',
+    'copy',
+    'lock',
+    'mkcol',
+    'move',
+    'purge',
+    'propfind',
+    'proppatch',
+    'unlock',
+    'report',
+    'mkactivity',
+    'checkout',
+    'merge',
+    'm-search',
+    'notify',
+    'subscribe',
+    'unsubscribe',
+    'patch',
+    'search',
+    'connect'
+  ];
+}