Safari Magnet Link 'Allow Transmission' Dialogue Box

[justcomingdear]

For years I've clicked YES (or whatever) each time I see the the 'Do you want to allow this page to open Transmission?' dialog in Safari. Today I mistakenly clicked ALWAYS ALLOW and now never see the dialogue. How do I get it back please? I'm so used to seeing it that I realise it's a kind of confirmation that the system actually accepted my click. Been through all the app's prefs and scoured the mac too. Thanks. OS 14.2.1, Transmission v 4.0.5