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-sdk/util-user-agent-browser/dist-es/index.native.js

@@ -0,0 +1,18 @@
+export const createDefaultUserAgentProvider = ({ serviceId, clientVersion }) => async (config) => {
+    const sections = [
+        ["aws-sdk-js", clientVersion],
+        ["ua", "2.1"],
+        ["os/other"],
+        ["lang/js"],
+        ["md/rn"],
+    ];
+    if (serviceId) {
+        sections.push([`api/${serviceId}`, clientVersion]);
+    }
+    const appId = await config?.userAgentAppId?.();
+    if (appId) {
+        sections.push([`app/${appId}`]);
+    }
+    return sections;
+};
+export const defaultUserAgent = createDefaultUserAgentProvider;