Auxlua should be flipping FFlags on

[Mothblocks]

print(string.format("%*", 1)) currently errors, as the FFlag for it is not flipped. Same with string interpolation. %* can probably be unflagged by now since it's been long enough but string interpolation won't be unflagged until about February or so.

FFlags are off by default for rollout on Roblox, but we should be able to flip them here. I think this needs support in mlua but I talked with Arseny about this before and he said it sounded sane

[Mothblocks]

Looks like %* specifically has already been unflagged and we're just out of date, I'm still right about string interpolation though