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/lodash/stubTrue.js

@@ -0,0 +1,18 @@
+/**
+ * This method returns `true`.
+ *
+ * @static
+ * @memberOf _
+ * @since 4.13.0
+ * @category Util
+ * @returns {boolean} Returns `true`.
+ * @example
+ *
+ * _.times(2, _.stubTrue);
+ * // => [true, true]
+ */
+function stubTrue() {
+  return true;
+}
+
+module.exports = stubTrue;