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/node-http-handler/dist-es/get-transformed-headers.js

@@ -0,0 +1,9 @@
+const getTransformedHeaders = (headers) => {
+    const transformedHeaders = {};
+    for (const name of Object.keys(headers)) {
+        const headerValues = headers[name];
+        transformedHeaders[name] = Array.isArray(headerValues) ? headerValues.join(",") : headerValues;
+    }
+    return transformedHeaders;
+};
+export { getTransformedHeaders };