Disable automatic insertion of "---@" on Enter

還沒有人認領這個 Issue。

### How are you using the lua-language-server?

Visual Studio Code Extension (sumneko.lua)

### Which OS are you using?

Windows

### What is the issue affecting?

Annotations, Completion, Formatting

### Expected Behaviour

When I hit Enter at the end of a class/parameter/etc. annotation, I get a new blank line.

### Actual Behaviour

When I type an annotation and hit Enter, I get `---@` automatically inserted.

### Reproduction steps

1. Type `---@class test`
2. Press Enter

### Additional Notes

I know this is an "intentional feature", but I would like a way to disable it. There is no setting that disables this (and only this) - turning "Editor: Auto Indent" to 'brackets' or lower disables this unwanted behavior, but then I lose auto-indent.

See https://github.com/LuaLS/lua-language-server/discussions/2786

### Log File

_No response_

使用所述的註解步驟重現 Visual Studio Code 擴充功能中的行為，然後結合現有的組態設定，追蹤註解、補全和格式化的處理流程。完成的標準是：某個設定可以在按下 Enter 時禁止自動插入 `---@`，同時保留正常的自動縮排。

由索引模型根據 Issue 內容生成。