magento-test/app/code/Magento/PaypalGraphQl/etc/graphql/di.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\QuoteGraphQl\Model\Resolver\SetPaymentMethodOnCart">
        <plugin name="paypal_express_payment_method" type="Magento\PaypalGraphQl\Model\Plugin\Resolver\SetPaymentMethodOnCart"/>
    </type>
    <type name="Magento\QuoteGraphQl\Model\Cart\SetPaymentMethodOnCart">
        <plugin name="hosted_pro_payment_method" type="Magento\PaypalGraphQl\Model\Plugin\Cart\HostedPro\SetPaymentMethodOnCart"/>
        <plugin name="payflowpro_payment_method" type="Magento\PaypalGraphQl\Model\Plugin\Cart\PayflowPro\SetPaymentMethodOnCart"/>
        <plugin name="payflowpro_cc_vault_payment_method" type="Magento\PaypalGraphQl\Model\Plugin\Cart\PayflowProCcVault\SetPaymentMethodOnCart"/>
    </type>
    <type name="Magento\Paypal\Model\Payflowlink">
        <plugin name="payflow_link_update_redirect_urls" type="Magento\PaypalGraphQl\Model\Plugin\Payflowlink"/>
    </type>

    <type name="Magento\PaypalGraphQl\Model\Plugin\Resolver\SetPaymentMethodOnCart">
        <arguments>
            <argument name="allowedPaymentMethodCodes" xsi:type="array">
                <item name="paypal_express" xsi:type="const">\Magento\Paypal\Model\Config::METHOD_WPP_EXPRESS</item>
                <item name="payflow_express" xsi:type="const">\Magento\Paypal\Model\Config::METHOD_WPP_PE_EXPRESS</item>
            </argument>
        </arguments>
    </type>

    <type name="Magento\PaypalGraphQl\Model\Provider\Checkout">
        <arguments>
            <argument name="checkoutTypes" xsi:type="array">
                <item name="paypal_express" xsi:type="string">\Magento\Paypal\Model\Express\Checkout</item>
                <item name="payflow_express" xsi:type="string">\Magento\Paypal\Model\PayflowExpress\Checkout</item>
            </argument>
        </arguments>
    </type>

    <type name="Magento\PaypalGraphQl\Model\Provider\Config">
        <arguments>
            <argument name="configTypes" xsi:type="array">
                <item name="paypal_express" xsi:type="string">\Magento\Paypal\Model\Config</item>
                <item name="payflow_express" xsi:type="string">\Magento\Paypal\Model\Config</item>
            </argument>
        </arguments>
    </type>

    <type name="Magento\QuoteGraphQl\Model\Cart\Payment\AdditionalDataProviderPool">
        <arguments>
            <argument name="dataProviders" xsi:type="array">
                <item name="payflow_link" xsi:type="object">Magento\PaypalGraphQl\Model\PayflowLinkAdditionalDataProvider</item>
                <item name="payflow_advanced" xsi:type="object">Magento\PaypalGraphQl\Model\PayflowLinkAdditionalDataProvider</item>
                <item name="payflowpro" xsi:type="object">\Magento\PaypalGraphQl\Model\PayflowProAdditionalDataProvider</item>
                <item name="hosted_pro" xsi:type="object">\Magento\PaypalGraphQl\Model\HostedProAdditionalDataProvider</item>
                <item name="payflowpro_cc_vault" xsi:type="object">\Magento\PaypalGraphQl\Model\PayflowProCcVaultAdditionalDataProvider</item>
            </argument>
        </arguments>
    </type>

    <type name="Magento\StoreGraphQl\Model\Resolver\Store\StoreConfigDataProvider">
        <arguments>
            <argument name="extendedConfigData" xsi:type="array">
                <item name="payment_payflowpro_cc_vault_active" xsi:type="string">payment/payflowpro_cc_vault/active</item>
            </argument>
        </arguments>
    </type>
</config>