[NT-552] Adding a new card should always select the newly added card

[ifbarrera]

📲 What

Fixes a bug where if you added a new card in the change payment method context, it did not automatically select.

🤔 Why

Because adding a new card should always select the newly added card.

🛠 How

If we are working with a project that has a backing, and a new card is added, ignore the card that was used to back and instead select the newly added card.

👀 See

♿️ Accessibility

N/A

🏎 Performance

N/A

✅ Acceptance criteria

• As a user with stored cards Navigate to the pledge screen on any project -- the first stored card should be selected. If you add a payment method on the pledge screen, the newly added payment method should be selected.
• As a user without stored cards Navigate to the pledge screen on any project -- the "Pledge" button should be disabled. If you add a payment method on the pledge screen, the newly added payment method should be selected.
• As a user with stored cards Navigate to the "Manage pledge" screen, then tap "Change payment method" -- the card you used to back that project should be at the front of the list, and selected. Then, if you add a new payment method, the newly added payment method should be selected and the "Confirm" button should be enabled.
• Back a project with a stored card, then delete the stored card in Settings -> Account -> Payment Methods -- then, navigate to "Manage pledge" and tap "Change payment method". None of the stored cards should be selected. Then, if you add a new payment method, the newly added payment method should be selected and the "Confirm" button should be enabled.

[justinswart]

Thanks for fixing this!