x11/xmoji: fix build on FreeBSD 15 and later

Seems like we now support inotify() well enough for the port to detect
its presence, but that conflicts with it also detecting kqueue support.
Disable inotify() to resolve the conflict.

MFH: 2025Q4
(cherry picked from commit 3feb67ede9b2da92d04bd33e64430a56f0ea7f25)