Skip the annoying popup after the transation is submitted (update the UI in the existing one)

### What is this about?

I associate random popups with malware:


I did not anticipate random popup.

Why not keep the existing popup? This would feel more natural, less scary.

Start by locating the transaction-submission flow and the existing popup referenced in the issue, then compare it with the popup shown in the attached image. Confirm which popup should be updated and verify that submitting a transaction uses the existing UI instead; the issue names no files or tests.

Written by the indexing model from the issue text.