fix: check for existence of pass on paired watch

[charliecruzan-stripe]

Summary

canAddCardToWallet now check specifically for the existence of passes that exist on paired device like apple watches if the hasPairedAppleWatch bool is true. If a pass exists on only one of the device and its paired device, then the merchant should show the 'add to apple wallet' button. added new statuses to the enum for debugging/clarity.

Motivation

Apple's guidelines around this have changed.

Testing

• I tested this manually
• I added automated tests

Documentation

Select one:

• I have added relevant documentation for my changes.
• [] This PR does not result in any developer-facing changes.

overrides #1162

[grantmac]

Hi @charliecruzan-stripe
Some questions if that's ok:

• What happens if this is set to true, and the device doesn't have a paired watch?
• Does this handle the use case where the pass exists on the iPhone but not the paired watch?

Thanks

[charliecruzan-stripe]

What happens if this is set to true, and the device doesn't have a paired watch?

The SDK would check the paired devices for the payment pass, and wouldn't find any

Does this handle the use case where the pass exists on the iPhone but not the paired watch?

Yep!