input: fallback for keymap compilation failure

If in weston.ini has an invalid keyboard layout, the xkb keymap
compilation fails, and the Weston clients can't use their
keyboard layout, resulting in a crash when try to type.

Fallback to XKB defaults to avoid the crash.

Signed-off-by: Silva Alejandro Ismael <silva.alejandro.ismael@gmail.com>
2 jobs for keymap-failure in 2 minutes and 25 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Container Prep
passed #403131
container_prep

00:01:17

 
  Build
passed #403132
build-native-meson

00:01:08