neovim补全项对比vscode下有缺漏

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

NeoVim

### Which OS are you using?

Windows WSL

### What is the issue affecting?

Completion

### Expected Behaviour

想使用自动require配置类，发现nvim不会提供补全，vscode可以
配置类都形如
``` lua
--- @class TradeFesLevelConfigData
--- @field _id string
--- @field exp integer
--- @field storage integer
--- @field extraToken number

--- @class TradeFesLevelConfig
local TradeFesLevelConfig = {}
TradeFesLevelConfig.NAME="TradeFesLevel"

--- @return TradeFesLevelConfigData
function TradeFesLevelConfig.getConfig(id)
return ConfigUtil.getConfig(TradeFesLevelConfig.NAME, tostring(id))
end

--- @retrun {[string]: TradeFesLevelConfigData}
function TradeFesLevelConfig.getAllConfig()
return ConfigUtil.getAllConfig(TradeFesLevelConfig.NAME)
end

--- @return TradeFesLevelConfigData[]
function TradeFesLevelConfig.getArrayConfig()
return ConfigUtil.getConfArr(TradeFesLevelConfig.NAME)
end

return TradeFesLevelConfig
```

### Actual Behaviour

但是neovim环境下没有这些选项

### Reproduction steps

1. Go to '...'
2. Click '...'
3. See error '...'

### Additional Notes

NVIM v0.9.5
Build type: Release
LuaJIT 2.1.1702233742

配置为lazyvim

### Log File

_No response_

Reproduce the missing completion behavior in NeoVim with the provided Lua class, return annotations, and lazyvim configuration, then compare it with the reported VSCode behavior. Check whether completion exposes the returned configuration fields and methods; done means the same relevant options appear in NeoVim, with a focused reproduction or test documenting the result.

Written by the indexing model from the issue text.