Set default launcher orientation to portrait

Also stop OrientationTouchTransformer from
spamming logs
b/150214193 should track properly handling
this in the future

Fixes: 146176182
Test: New vertical layout showed up when
swiping to Overview w/ landscape app.
Works for both autorotate on and off.

Change-Id: I3707cf7b5693be0fcf4d63491901f4ec00793f4f