Use small url text scaling in narrow mode

Relates: GNOME/epiphany#1172
3 jobs for url-narrow-text in 15 minutes and 2 seconds
Status Job ID Name Coverage
  Test
passed #1341169
check-code-style

00:01:08

passed #1341170
flatpak
flatpak

00:15:02

passed #1341171
flatpak
scanbuild

00:12:45