Both the `payment_custom` and the `account_payment` modules made changes
to the visibility of the `payment_followup` group in the view of the
`payment.provider` model. As these modules didn't depend on each other,
the visibility of the group was determined based on the (random) loading
order or the modules, causing the "Journal" field to be either visible
or invisible on other providers than Wire Transfer.
With this commit, a priority is set on `payment_custom`'s view to force
it to always load after that of `account_payment`.
closesodoo/odoo#156514
Signed-off-by: Antoine Vandevenne (anv) <anv@odoo.com>