Make the discard button red in the abort draft dialog while keeping the "Keep" button default.

Fixes Issue #342
5 jobs for draft-altert-dialog in 22 minutes and 50 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #256404
fedora

00:04:04

passed #256405
ubuntu

00:08:23

 
  Test
passed #256406
flatpak

00:13:51

 
  Deploy
passed #256407
review

00:00:33

manual #256408
allowed to fail manual
stop_review