[FIX] base: ignore user lang when comparing with arch

Without this commit, when the compare/reset view feature was reading the arch,
it would translate it.

2 issues :
- When reading from file (hard reset), it would translate the file version
- When reading current arch, it would translate it

closes odoo/odoo#62346

X-original-commit: e69c9c5fe73b5bb33342f08247488821f3b71800
Signed-off-by: Jérémy Kersten (jke) <jke@openerp.com>
Signed-off-by: Romain Derie <rdeodoo@users.noreply.github.com>