In Nvim, like DirChanged, this also triggers when switching windows.
This marks Vim patch 8.2.4335 as ported.
vim-patch:8.2.4335: no autocommand event triggered before changing directory
Problem: No autocommand event triggered before changing directory. (Ronnie
Magatti)
Solution: Add DirChangedPre. (closesvim/vim#9721)
28e8f73ae2