[3.9.1] - AIS+PIS QoL and Patches

Fixed

• A crash where an attempt to fill the provider selection list with duplicate providers was made, which is now handled gracefully as unexpected behavior.
• Some cases where the user would get stuck on a Wait screen, especially when prompted by the bank to confirm the TrueLayer transaction in their banking app.
• Routing logic for certain providers requesting a PIS-only flow.
• An issue with the Scheme Selection screen when the Continue button would not get disabled while processing, which has previously manifested for a very small percentage of users on slower network connections.