Both check for and throw Cancelled errors some more

Fixes some crashes when switching folders by keeping the down arrow
held down.
5 jobs for <span class="ref-name">wip/fast-folder-switching-crashes</span> in 35 minutes and 51 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #278077
fedora

00:15:54

passed #278078
ubuntu

00:23:54

 
  Test
passed #278079
flatpak

00:10:49

 
  Deploy
passed #278080
review

00:00:35

passed #278081
allowed to fail manual
stop_review

00:00:31