Change modal for mass-email -> send-test

[agri]

Starting with versions before 9.x, I was successful to make a minor change in the template for mass-email modal -> send-test. The template was situated in
client/custom/modules/crm/res/templates/mass-email/modals/send-test.tpl.
With v9.1.0 it is still there, but obviously is not used any more. What's more, there formerly had been an entry in
client/lib/templates.tpl,
referring to send-test.tpl. This entry has vanished in Espo v9.1.0. So, how can I change this modal or reactivate send-test.tpl?
Regards

[agri]

[ EspoCRM Version 9.2.4 ]

I'd like to get rid of one of the input fields in send-test modal:

How to acheive this?
Regards

[yuri]

You can monkey patch the view. The simple way if just to remove the DOM element in the afterRender method.