lua minify error: result missing parentheses with e.g. (x+a)//y

[ElMoonLite]

The LUA minify seems to handle operator precedence wrong in some cases.

e.g.
Entering return (x+6)//4 will result in return x+6//4 which is NOT the same.
The latter would be evaluated as return x+(6//4).
If it helps, another way to look at it is that it would change something like floor((x+6)/4) to x + floor(6/4).

I'm guessing because internally + and // are incorrectly handled as same precedence?

See:
https://www.lua.org/pil/3.5.html -- However, note that // is missing here.
https://www.lua.org/manual/5.4/manual.html#3.4.8 -- Here // is shown to have the same precedence as: * / // %

Maybe while fixing this bug, also check other operator precedence issues?