emulators/wine-devel: Package win32u.dll on 64-bit, too

Since upstream commit 80df54a407680859ea777ae0b60aef6f8f378719
in early October 2021, and thus the recent 6.19 release, user32
directly links to win32u which has evolved from a pure stub
during that period.

We have been packaging win32u since FreeBSD commit
1b62862f143abe52c91f69e09c024d8814fd6b95 and the update to Wine 6.11,
alas only on i386. Now it builds and is necessary universally, so
package it everywhere.

Bump PORTREVISION.

PR: 259223
Reported by: Thibault Payet <monwarez@mailoo.org>
Approved by: maintainer (= author)