leaflet: Add version info to the over/under mode transitions

These were forgotten in the previous commit.
7 jobs for leaflet-mode-over-under in 10 minutes and 38 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Build
passed #193746
librem5
build-debian-clang

00:03:12

passed #193744
librem5
build-debian-gcc

00:02:32

passed #193745
librem5
build-debian-gcc-static

00:02:27

passed #193747
librem5
build-fedora-gcc

00:04:47

 
  Docs
passed #193748
librem5
build-gtkdoc

00:01:40

 
  Test
passed #193749
librem5
unit-test

00:01:53

45.8%
 
  Package
passed #193750
librem5
package-debian

00:02:17