The after.lua script is not being loaded

[christianang]

We updated to the latest config. It looks like our user/after.lua script is not being loaded. This is probably an issue with any user script, but we only use after.lua right now.

This seems to be related to this change: a0fcbfe.

The has_module function no longer returns true when switching from loaders to preload. I learned this by reverting this change and can see my after.lua file get loaded. Unsure of what the fix is though.