[FIX] point_of_sale: keyboard stays ltr regardless of user language

Steps to reproduce:
- install pos
- install the hebrew language and set it as preferred language
- start a pos session with the virtual keyboard option activated
- try to search a product

Previous behavior:
the keyboard keys are reversed

Current behavior:
the keyboard keys are not reversed

opw-2171278

closes odoo/odoo#44388

X-original-commit: 37e3fe90
Signed-off-by: mightyjol <jhk-odoo@users.noreply.github.com>