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/events/tests/errors.js

@@ -0,0 +1,13 @@
+'use strict';
+var assert = require('assert');
+var EventEmitter = require('../');
+
+var EE = new EventEmitter();
+
+assert.throws(function () {
+  EE.emit('error', 'Accepts a string');
+}, 'Error: Unhandled error. (Accepts a string)');
+
+assert.throws(function () {
+  EE.emit('error', { message: 'Error!' });
+}, 'Unhandled error. ([object Object])');