Merge branch 'fullscreen-button-icon' into 'master'

MediaViewer: Change full screen button icon

See merge request World/fractal!152
3 jobs for master in 21 minutes and 11 seconds (queued for 2 minutes and 29 seconds)
Status Job ID Name Coverage
  Test
passed #57164
flatpak

00:21:11

failed #57157
flatpak

00:00:16

failed #56473
flatpak

00:00:14