[FIX] web: load_translation fallback to url language
[FIX] web: load_translation fallback to url language

This commit is fine tuning of 9f142c8ff5a383.

Apparently, context_get callback is never called. I
guess this is due to the fact that we are higher.

context_get is defined in public/public_root.js and
we are in core/session.js

The only way to fix is to retrieve the HTML tag language.

OPW-2244843

closes odoo/odoo#53151

X-original-commit: 2bbb8fbf7ae909da03d97d16b228ae5a95de7d18
Signed-off-by: Jason Van Malder (jvm) <f3b543dc99538be7ecc03fd24be010615c4059c2@odoo.com>

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo