No boot entry for GRUB on UEFI

Somewhat related to #131 from what I've seen but doesn't seem to be entirely the same issue:

So I migrated to Void a few days ago and so far am very happy with it, I just had a mild scare upon installation because no matter what I did and after a few retries, my laptop claimed right after reboot always that it couldn't find anywhere to boot from (it's a Dell XPS 13 from 2018 if that helps, latest BIOS firmware to my knowledge). After trying a few things frantically that didn't work, I eventually looked into my BIOS configuration and found out that the boot entries were understandably wiped, but no EFI boot entry was put in automatically for GRUB as I would have kinda expected, and therefore I just had to add it manually and all was fine.

I would assume this is unintended behaviour, but please feel free to tell me if I should have just realized this on my own, since the Void documentation, at least as far as I could tell, doesn't mention this eventuality anywhere.

Also, this systematically showed up in one of the last steps of autoconfig before the installer claimed it had finished its work, I couldn't find much for what it's supposed to mean though, not sure whether it's related or should be a new issue (sorry for the quality, it shows up only briefly-ish, on the left what's cut off says "configuration error":

No source file, test, or entry point is named. Begin by reproducing the installer’s UEFI/GRUB autoconfiguration on the reported Dell XPS 13, then investigate the configuration error shown during autoconfig. Done means installation creates a usable EFI boot entry for GRUB or clearly reports the required manual step.