[FIX] web : display timepicker in ltr direction for rtl lang

Issue:
======
The time display for rtl language is the sale as ltr but in the
timepicker it's displayed as seconds-minutes-hours which is wrong.

Steps to reproduce the error:
=============================
1-Install calendar
2-Change the language to Arabic
3-Go to calendar and click on create new
4-Click on the datepicker for start for example and click on select time

Solution:
=========
I made the display of the datepicker independant of the direction of
language and alwyas display it in ltr direction.

opw-3423875

closes odoo/odoo#130636

Signed-off-by: Julien Mougenot (jum) <jum@odoo.com>