Feature Request: Support array table diagnose when a constant variable as key in lua 5.4

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?

Diagnostics/Syntax Checking

Expected Behaviour

It would be nice if when trying to use a constant variable as key of array the hint is also right. Thanks

`local ONE_INDEX = 1

---@class Test
---@field [1] math
local _M = {
math
}

-- hint the math
_M[ONE_INDEX].floor(1.1)`

Actual Behaviour

can't recognize the object

Reproduction steps

Empty

Additional Notes

No response

Log File

No response

首先在 VS Code extension 中复现 Lua 5.4 示例，并跟踪使用 变量进行索引时的诊断或类型推断路径。当 language server 将 _M[ONE_INDEX] 识别为带注解的数组项，并在没有无关回归的情况下提供预期提示时，即表示完成。