Fix switches in the accounts editor looking squashed

Don't apply CSS padding to all image widget descendants of an editor row
since switches and other stock widgets also use them internally.

Fixes #299
5 jobs for wip/299-squished-switches in 36 minutes and 17 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #258439
fedora

00:11:39

passed #258440
ubuntu

00:14:38

 
  Test
passed #258441
flatpak

00:20:06

 
  Deploy
passed #258442
review

00:00:34

passed #258443
allowed to fail manual
stop_review

00:00:57