Fix #18246: correctly compute capture sets in `TypeComparer.glb`#18254

Merged

Linyxus merged 3 commits intoscala:mainfrom

dotty-staging:cc-glb-fix-1

Jul 23, 2023

Commits on Jul 20, 2023

Commits on Jul 23, 2023

Roll the `isAlwaysEmpty` optimisation into `capturing`
Linyxus
committed