Deeplinking or scanning an invoice from your own node does 'nothing'

[JssDWt]

If you scan an invoice from your own node, or deeplink an invoice from your own node, the app does nothing.

Expected:
When you scan an invoice that's from your own node, display an error like "self payments not allowed"

Screen_Recording_20230731_150926_Phoenix.mp4

[ubbabeck]

This is the same behaviour as in Breezmobile which is the reference for C-breez. If a user pastes or scans invoices from the same nodeID nothing happens.

@kingonly just to be sure, do we wish to add error handling (eg. showing a flushbar) for payment attempts to the same node?

[kingonly]

We can. Nice to have, but not a priority.