Add isRecoverable property to CheckoutError

Samples/MobileBuyIntegration/MobileBuyIntegration/CartViewController.swift

@@ -170,7 +170,7 @@ extension CartViewController: CheckoutDelegate {
 	}
 
 	func shouldRecoverFromError(error: CheckoutError) -> Bool {
-		return true
+		return error.isRecoverable
 	}
 
 	func checkoutDidFail(error: ShopifyCheckoutSheetKit.CheckoutError) {

Sources/ShopifyCheckoutSheetKit/CheckoutDelegate.swift

@@ -60,7 +60,7 @@ extension CheckoutDelegate {
 	}
 
 	public func shouldRecoverFromError(error: CheckoutError) -> Bool {
-		return true
+		return error.isRecoverable
 	}
 
 	private func handleUrl(_ url: URL) {

Sources/ShopifyCheckoutSheetKit/CheckoutError.swift

@@ -72,6 +72,17 @@ public enum CheckoutError: Swift.Error {
 	/// This may happen when the user has paused on checkout for a long period (hours) and then attempted to proceed again with the same checkout url
 	/// In event of checkoutExpired, a new checkout url will need to be generated
 	case checkoutExpired(message: String, code: CheckoutErrorCode, recoverable: Bool = false)
+
+	public var isRecoverable: Bool {
+        switch self {
+		case .authenticationError(_, _, let recoverable),
+			.checkoutExpired(_, _, let recoverable),
+			.checkoutUnavailable(_, _, let recoverable),
+			.configurationError(_, _, let recoverable),
+			.sdkError(_, let recoverable):
+			return recoverable
+		}
+    }
 }
 
 internal enum CheckoutErrorGroup: String, Codable {

Sources/ShopifyCheckoutSheetKit/CheckoutWebViewController.swift

@@ -240,13 +240,6 @@ extension CheckoutWebViewController: CheckoutWebViewDelegate {
 	}
 
 	private func isErrorRecoverable(error: CheckoutError) -> Bool {
-		switch error {
-		case .authenticationError(_, _, let recoverable),
-			.checkoutExpired(_, _, let recoverable),
-			.checkoutUnavailable(_, _, let recoverable),
-			.configurationError(_, _, let recoverable),
-			.sdkError(_, let recoverable):
-			return recoverable
-		}
+		return error.isRecoverable
 	}
 }