qml: change "receive flow": prompt for amount/description before creating request

[SomberNight]

related to discussion in #8254

I propose:

1. clicking the "Receive" button opens the "Edit payment request" popup, except it would be named ~"Create payment request", while still on the history screen (in the background)
   • the user can then enter an amount/description/expiration here
     • if the user cancels the popup, a payment request is not created, and they are back in the history screen
     • if the user clicks "Apply" (maybe renamed to ok/create), the payment request is created and saved, and the "Receive" screen opens
2. in the Receive screen, I think there would be no more need for the "Edit" button/functionality - once a request is created, no need to allow changing it
3. for expiration time, there should not be a "never" option
   • this would make hitting the gap limit less likely, as we reuse addresses for expired requests
4. still open question: what to do if the gap limit is hit anyway? maybe it is sufficient to show the existing "warning/create_anyway" popup...

[ecdsa]

Regarding 4 (what to do if the gap limit is hit), see #8254

[SomberNight]

note: Thomas has some work-in-progress code for this

[accumulator]

This is much better actually 👍