Include the 'return_url' parameter for setup_intents in the Legacy checkout experience (#3285)

* Include the 'return_url' parameter for setup_intents in Legacy

* Add changelog entries

Author: a-danae

changelog.txt

@@ -1,6 +1,7 @@
 *** Changelog ***
 
 = 8.5.2 - xxxx-xx-xx =
+* Fix - Prevent failures creating SetupIntents when using a non-saved payment method on the Legacy checkout experience.
 
 = 8.5.1 - 2024-07-12 =
 * Fix - Fixed fatal error caused by non-existent class.

includes/abstracts/abstract-wc-stripe-payment-gateway.php

@@ -1710,6 +1710,7 @@ public function setup_intent( $order, $prepared_source ) {
 		$setup_intent = WC_Stripe_API::request(
 			[
 				'payment_method' => $prepared_source->source,
+				'return_url'     => $this->get_stripe_return_url( $order ),
 				'customer'       => $prepared_source->customer,
 				'confirm'        => 'true',
 			],

readme.txt

@@ -129,5 +129,6 @@ If you get stuck, you can ask for help in the Plugin Forum.
 == Changelog ==
 
 = 8.5.2 - xxxx-xx-xx =
+* Fix - Prevent failures creating SetupIntents when using a non-saved payment method on the Legacy checkout experience.
 
 [See changelog for all versions](https://raw.githubusercontent.com/woocommerce/woocommerce-gateway-stripe/trunk/changelog.txt).