Payment request created even if inbound capacity unavailable

[pinheadmz]

Steps to reproduce the behavior

1. Open app and fund
2. Create payment req with no inbound capacity
3. Warning appears and notification is logged
4. Payment request process proceeds anyway: a. QR code and invoice are displayed b. Request is logged in transaction history

Expected behavior

4. Return to home screen or display information on how to obtain inbound capacity

[fresheneesz]

This duplicates #1145 from Jun 7 but this one has more details.