Assigning to a constant variable with function definition syntax doesn't error

[Halalaluyafail3 <luigighiron@...>]

Hi, I've discovered that the function definition syntax (function
name(args) body end) doesn't check if the variable assigned to is
constant.
Example:

local x<const>
function x(...)return print(...)end
x"???" --> ???

I feel like this should generate an error, but maybe there is a reason
for this being allowed?