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/get-value-from-text-node.js

@@ -0,0 +1,12 @@
+export const getValueFromTextNode = (obj) => {
+    const textNodeName = "#text";
+    for (const key in obj) {
+        if (obj.hasOwnProperty(key) && obj[key][textNodeName] !== undefined) {
+            obj[key] = obj[key][textNodeName];
+        }
+        else if (typeof obj[key] === "object" && obj[key] !== null) {
+            obj[key] = getValueFromTextNode(obj[key]);
+        }
+    }
+    return obj;
+};