Fix loading button state

## Issue Report

Fix loading button state

### Expected behavior

When the user clicks on the `generate code.json metadata` button, the loading state doesn't resolve itself

### Actual behavior

Loading state isn’t being reset after the action completes

### Steps to reproduce the behavior

1. Click on button
2. Metadata is generated
3. Button is still in a loading state

首先找到 `generate code.json metadata` 按钮，并跟踪其在元数据生成过程中的操作。重现该问题，然后确认生成完成后按钮会退出加载状态。

由索引模型根据 Issue 内容生成。