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/ieee754/index.d.ts

@@ -0,0 +1,10 @@
+declare namespace ieee754 {
+    export function read(
+        buffer: Uint8Array, offset: number, isLE: boolean, mLen: number,
+        nBytes: number): number;
+    export function write(
+        buffer: Uint8Array, value: number, offset: number, isLE: boolean,
+        mLen: number, nBytes: number): void;
+  }
+  
+  export = ieee754;