sysutils/htop: Disable LSOF option by default

This commit should ensure that we have a htop package for 13.0-RELEASE
on non-x86 archs. When sysutils/lsof fails to build (and that
happens often enough) htop is skipped and we no longer have a package
for it. lsof is only used for htop's "list open files" view.

PR: 252279