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/express-validator/lib/utils.d.ts

@@ -0,0 +1,12 @@
+import { Request } from './base';
+import { ContextRunningOptions, ResultWithContext, ValidationChainLike } from './chain';
+export declare const bindAll: <T>(object: T) => { [K in keyof T]: T[K]; };
+export declare function toString(value: any): string;
+/**
+ * Runs all validation chains, and returns their results.
+ *
+ * If one of them has a request-level bail set, the previous chains will be awaited on so that
+ * results are not skewed, which can be slow.
+ * If this same chain also contains errors, no further chains are run.
+ */
+export declare function runAllChains(req: Request, chains: readonly ValidationChainLike[], runOpts?: ContextRunningOptions): Promise<ResultWithContext[]>;