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/README.md

@@ -0,0 +1,29 @@
+# @aws-sdk/util-user-agent-browser
+
+[![NPM version](https://img.shields.io/npm/v/@aws-sdk/util-user-agent-browser/latest.svg)](https://www.npmjs.com/package/@aws-sdk/util-user-agent-browser)
+[![NPM downloads](https://img.shields.io/npm/dm/@aws-sdk/util-user-agent-browser.svg)](https://www.npmjs.com/package/@aws-sdk/util-user-agent-browser)
+
+## Usage
+
+In previous versions of the AWS SDK for JavaScript v3, the AWS SDK user agent header was provided by parsing the navigator user agent string with the `bowser` library.
+
+This was later changed to browser feature detection using the native Navigator APIs, but if you would like to have the previous functionality, use the following code:
+
+```js
+import { createUserAgentStringParsingProvider } from "@aws-sdk/util-user-agent-browser";
+
+import { S3Client } from "@aws-sdk/client-s3";
+import pkgInfo from "@aws-sdk/client-s3/package.json";
+// or any other client.
+
+const client = new S3Client({
+  defaultUserAgentProvider: createUserAgentStringParsingProvider({
+    // For a client's serviceId, check the corresponding shared runtimeConfig file
+    // https://github.com/aws/aws-sdk-js-v3/blob/main/clients/client-s3/src/runtimeConfig.shared.ts
+    serviceId: "S3",
+    clientVersion: pkgInfo.version,
+  }),
+});
+```
+
+This usage is not recommended, due to the size of the additional parsing library.