[widgets] improve UI readability for message boxes

4 jobs for 241_asset_names_and_dialog_boxes in 15 minutes and 45 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #190487
docker
build_linux_36

00:06:15

passed #190488
docker
build_linux_37

00:06:06

passed #190485
macosx
build_macosx_36

00:15:41

passed #190486
macosx
build_macosx_37

00:15:39