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-crypto/sha1-browser/build/main/isEmptyData.js

@@ -0,0 +1,11 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.isEmptyData = void 0;
+function isEmptyData(data) {
+    if (typeof data === "string") {
+        return data.length === 0;
+    }
+    return data.byteLength === 0;
+}
+exports.isEmptyData = isEmptyData;
+//# sourceMappingURL=isEmptyData.js.map