[FIX] *: remove buggy calls to with_context

When .with_context() is called with a dictionary as 1st positional
argument, it will replace context (and not modify the referenced keys)
It may create bugs when losing the content of the context (e.g. remove
partner's language)

This is a cherry-pick to saas-12.5 of odoo/odoo#36164 of the logistic
part as discussed

closes odoo/odoo#36690

Signed-off-by: Martin Trigaux (mat) <mat@odoo.com>