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/middleware-endpoint/dist-es/resolveEndpointRequiredConfig.js

@@ -0,0 +1,9 @@
+export const resolveEndpointRequiredConfig = (input) => {
+    const { endpoint } = input;
+    if (endpoint === undefined) {
+        input.endpoint = async () => {
+            throw new Error("@smithy/middleware-endpoint: (default endpointRuleSet) endpoint is not set - you must configure an endpoint.");
+        };
+    }
+    return input;
+};