releng/14 does not honor .forward for root

From: bob prohaska <fbsd_at_www.zefox.net>
Date: Fri, 03 Nov 2023 15:19:24 UTC
My RPi2 releng/14 armv7 test host sends and receives mail but for some
reason ignores a .forward in root's home directory. 

I was about to retest mail functioning before sending this, but
it seems the host locked up overnight 8-( with 13 lines of 
ucom_inwakeup: tp=0xd6b3d800
on the console. That's a frequently-seen message, no idea if it's
significant.

Thanks for reading,

bob prohaska