[7.x] Drop allow_redirects parameter from Stripe Payment Intent API request (#1247)

* feat: allow configurable allow_redirects for stripe gateway

* Remove `allow_redirects` parameter

Looks like we only added it to fix failing tests, but the tests seem to pass without it... so 🤷‍♂️

---------

Co-authored-by: Duncan McClean <duncan@duncanmcclean.com>

Author: parkerman92

src/Gateways/Builtin/StripeGateway.php

@@ -76,7 +76,6 @@ public function prepare(Request $request, OrderContract $order): array
         if ($this->inPaymentElementsMode()) {
             $intentData['automatic_payment_methods'] = [
                 'enabled' => true,
-                'allow_redirects' => 'never',
             ];
         }