Certainly doable. In more generic way, could I put it that you'd like not to be bothered by notifications when app is in foreground /active?
nostr:npub1kvaln6tm0re4d99q9e4ma788wpvnw0jzkz595cljtfgwhldd75xsj9tkzv, is there a way to change the notification settings to only notify me of incoming transactions, and silence outgoing transaction notifications?
If not, might some more control over notifications be possible in a future update?

Discussion
I think that would do it!