quic: refactor and improve ipv6Only

Ignore `ipv6Only: true` when binding to `'udp4'` (this differs from
dgram which will still attempt to apply the flag and will fail during
bind). Improve the test so that it should work consistently.

Signed-off-by: James M Snell <jasnell@gmail.com>

PR-URL: https://github.com/nodejs/node/pull/33935


Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Anna Henningsen <anna@addaleax.net>