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/async/internal/breakLoop.js

@@ -0,0 +1,10 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+// A temporary value used to identify if the loop should be broken.
+// See #1064, #1293
+const breakLoop = {};
+exports.default = breakLoop;
+module.exports = exports.default;