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/crc32c/build/main/index.d.ts

@@ -0,0 +1,7 @@
+export declare function crc32c(data: Uint8Array): number;
+export declare class Crc32c {
+    private checksum;
+    update(data: Uint8Array): this;
+    digest(): number;
+}
+export { AwsCrc32c } from "./aws_crc32c";