Show a nice error message when starting negative transactions on Adyen terminals. opw-2368978 closes odoo/odoo#60985 X-original-commit: 4dc790629e49c6e78a009fde3a22915944bb5583 Signed-off-by: Quentin Lejeune (qle) <qle@odoo.com> Signed-off-by: Antoine Prieëls <aprieels@users.noreply.github.com>