emulators/wine7: Switch the default from OSS to ALSA

ALSA has been the default on Linux for ages and is what the
majority of upstream Wine developers use. More importantly,
though, it appears newer versions of Wine aren't actually
quite working with OSS. So, switch the default over to ALSA.

(This backports 06e0feb25f from emulators/wine.)

Bump PORTREVISION.

PR: 268164