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/@aws-crypto/sha256-js/build/module/knownHashes.fixture.d.ts

@@ -0,0 +1,5 @@
+export declare const hashTestVectors: Array<[Uint8Array, Uint8Array]>;
+/**
+ * @see https://tools.ietf.org/html/rfc4231
+ */
+export declare const hmacTestVectors: Array<[Uint8Array, Uint8Array, Uint8Array]>;