Undefined global `var` in a function which has injected `var` into env

Describe the bug
luv -v: LuaJIT 2.1.0-beta3 -- Copyright (C) 2005-2022 Mike Pall. https://luajit.org/

local A = {}

function A.sync(executor)
    local env = getfenv(executor)
    env.await = A.wait
    -- ......
    executor()
end

function A.wait(promise)
    print('go')
end

A.sync(function()
    await() -- Undefined global `await`.
end)

return A

Expected behavior
No Undefined global

If it's hard to fix, how can I trick the server into treating awati as a global variable but not become an item in completion outside the executor function.

在正在运行的 Lua 语言服务器中使用 Lua 示例重现该报告，并检查分析器如何处理 getfenv、注入的环境成员和全局诊断。由于 issue 中没有指定源文件或测试，因此首先定位全局分析和补全相关的入口点。完成的标准是：await 在 executor 内不会被报告为未定义，但在 executor 外仍不会出现在补全中。