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/@smithy/fetch-http-handler/dist-es/request-timeout.js

@@ -0,0 +1,11 @@
+export function requestTimeout(timeoutInMs = 0) {
+    return new Promise((resolve, reject) => {
+        if (timeoutInMs) {
+            setTimeout(() => {
+                const timeoutError = new Error(`Request did not complete within ${timeoutInMs} ms`);
+                timeoutError.name = "TimeoutError";
+                reject(timeoutError);
+            }, timeoutInMs);
+        }
+    });
+}