It is by default in pos_mercury that pending payments are removed before syncing the order to the backend. However, this is not the case for the newly introduced API for payment terminals in pos. In this commit, we are implementing this pos_mercury feature as default for all terminal payment methods. closes odoo/odoo#35579 Task-id: 1984690 Signed-off-by: pimodoo <pimodoo@users.noreply.github.com>