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/es-object-atoms/RequireObjectCoercible.d.ts

@@ -0,0 +1,3 @@
+declare function RequireObjectCoercible<T extends {}>(value: T, optMessage?: string): T;
+
+export = RequireObjectCoercible;