x11-fonts/iosevka-comfy: mark as RESTRICTED

Upstream believes the font to not be distributable as it has the same
name as the original font it is derived from. This violates § 3 of the
ISL Open Font License 1.1.

The renamed font is distributable and provided in x11-fonts/aporetic,
but has reduced variants. Maintainer has requested that this port
remain for use until all variants are added.

PR: 284597
MFH: 2025Q1
(cherry picked from commit fc467fa00c914023f1c387aa3a5baea1cd6546a9)