There is an updated pull request by furryfixer against master on the void-packages repository

https://github.com/furryfixer/void-packages patch-1
https://github.com/void-linux/void-packages/pull/27099

xdm.pam: update for elogind support
Add optional access to "pam_elogind.so" to prevent polkit agent malfunction in multiple Desktop Environments if started from xdm.

A patch file from https://github.com/void-linux/void-packages/pull/27099.patch is attached