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/token-providers/dist-es/fromStatic.js

@@ -0,0 +1,8 @@
+import { TokenProviderError } from "@smithy/property-provider";
+export const fromStatic = ({ token, logger }) => async () => {
+    logger?.debug("@aws-sdk/token-providers - fromStatic");
+    if (!token || !token.token) {
+        throw new TokenProviderError(`Please pass a valid token to fromStatic`, false);
+    }
+    return token;
+};