uma_zalloc_domain: call uma_zalloc_debug in multi-domain path

It was only called in the non-NUMA and single-domain paths.
Some of its assertions were duplicated in uma_zalloc_domain,
but some things were missed, especially memguard.

Reviewed by: markj, rstone
MFC after: 1 week
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D34472