mouse: Prevent direction change for primary mouse button box

In Right-to-left locales GNOME Settings presents a button on the
left with the translated label "Right" and a button on the right
with the translated label "Left".

These changes prevent the flip of the direction buttons in RTL
locales.

Fixes #1101
7 jobs for mouse-button-order-rtl in 2 minutes and 25 seconds (queued for 1 second)
Status Name Job ID Coverage
  Build
passed build #1250710

00:01:33

 
  Test
passed test #1250711

00:00:52

 
  Manual
manual asan #1250713
asan allowed to fail manual
manual flatpak #1250712
allowed to fail manual
manual msan #1250716
allowed to fail manual
manual tsan #1250714
allowed to fail manual
manual ubsan #1250715
allowed to fail manual