Mk/bsd.sites.mk: Comparison with '>=' requires both operands 'fbsd-1.0.0' and '10' to be numeric

From: Einar_Bjarni_Halldórsson <einar_at_isnic.is>
Date: Tue, 10 Jun 2025 13:19:03 UTC
Hi,

See https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=287425

Commit https://cgit.freebsd.org/ports/commit/?id=a0ce779c88e46d0f5f05bd5753365344282ccd7a
broke (I assume all) poudriere builds.

.einar