Adding global definitions always indents with 4 spaces

还没有人认领这个 Issue。

### Which OS are you using?

Windows

### Expected Behaviour

When I use the VSCode function to define a variable as allowed global, it should re-use the formatting of the existing file (luarc.json) when adding it.

### Actual Behaviour

It always uses 4 spaces, instead of the 2 the file uses.

### Reproduction steps

1. Have a global in your file
2. Have a .luarc.json file in your project
3. Have the LSP complain about it being global
4. Use the VSC action to mark it as defined

### Additional Notes


### Log

_No response_

首先跟踪将允许的全局变量添加到 .luarc.json 的 VSCode 操作，然后检查现有文件的缩进是如何读取或保留的。使用采用两个空格缩进的文件重现该问题，并确认将全局变量标记为已定义后会保留该格式，而不是插入四个空格。

由索引模型根据 Issue 内容生成。