[CONSUMERBANK-582] Put bank tab in correct position

[mats-stripe]

Summary

This updates the payment sheet to place the Instant Debits / Panther bank tab at either the index for link, or in the third / last position. This matches the behaviour we currently have in the web payment elements.

Motivation

CONSUMERBANK-582

Testing

Unit tests added

Config	Result

Changelog

N/a

[github-actions[bot]]

⚠️ Public API changes detected:

StripePayments

- get
- }
- public var crypto: StripePayments.STPPaymentMethodCrypto? {
- case crypto
- public var crypto: StripePayments.STPPaymentMethodCryptoParams?
- public init(crypto: StripePayments.STPPaymentMethodCryptoParams, billingDetails: StripePayments.STPPaymentMethodBillingDetails?, metadata: [Swift.String : Swift.String]?)
- public var allResponseFields: [Swift.AnyHashable : Any] {
- get
- }
- public var description: Swift.String {
- @objc get
- }
- public class func decodedObject(fromAPIResponse response: [Swift.AnyHashable : Any]?) -> Self?
- @objc deinit
- public var additionalAPIParameters: [Swift.AnyHashable : Any]
- public class func rootObjectName() -> Swift.String?
- public class func propertyNamesToFormFieldNamesMapping() -> [Swift.String : Swift.String]
- public init()
- @objc deinit

If you are adding a new public API consider the following:

• Do these APIs need to be public or can they be protected with @_spi(STP)?
• If these APIs need to be public, assess whether they require an API review.

If you are modifying or removing a public API:

• Does this require a breaking version change?
• Do these changes require API review?

If you confirm these APIs need to be added/updated and have undergone necessary review, add the label modifies public API to this PR to acknowledge and bypass this check.

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