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/smithy-client/dist-es/ser-utils.js

@@ -0,0 +1,14 @@
+export const serializeFloat = (value) => {
+    if (value !== value) {
+        return "NaN";
+    }
+    switch (value) {
+        case Infinity:
+            return "Infinity";
+        case -Infinity:
+            return "-Infinity";
+        default:
+            return value;
+    }
+};
+export const serializeDateTime = (date) => date.toISOString().replace(".000Z", "Z");