This change touches a lot of files, but it's pretty minor. Most files simply
have .dom_exception = true removed from their WebAPI binding.
The only reason NOT to have this on is in the case where a Zig function returns
an error that incorrectly gets mapped to a DOMException. But this hasn't
happened yet, none of the base errors (e.g. OutOfMemory) map to a DOMException,
but the opposite DOES happen: we don't flag an API as dom_exception = true that
we should.