Fixes pill bottlecaps not showing when closed (#5932)

# About the pull request

Apparently a little `pills_closed` bottle overlay got accidentally
obliterated in one of my commits from #5838 a while back. Whoops.
This fixes it. Pill bottles should once again don their hats when
they're not opened.

# Changelog
:cl: nauticall
fix: Makes pill bottle caps appear on closed pill bottles again.
/:cl: