Varargs aren't typed correctly

[ghost]

Environment

name	version
IDEA version	IU2021.1.2
Luanalysis version	1.2.3
OS	Ubuntu 21.04

What are the steps to reproduce this issue?

1. Create required Lua file with contents:

function test(arg) end

local t = ...
test(t) -- Missing argument: arg: null

What happens?

t's type is any...

What were you expecting to happen?

t's type should be simply any

Any logs, error output, etc?

…

Any other comments?

Wrapping with parentheses in a function call also does not produce the correct result (this should only the first thing in the vararg).

function test(arg) end

test((...)) -- Missing argument: arg: null

I ran into this issue with existing code where I am using the module name available through ....