Change the ifthenpay gateway icon on the WooCommerce blocks checkout

gateway_ifthen_blocks_payment_method_data.php

<?php
// For ifthenpay Gateway use gateway_ifthen_blocks_payment_method_data
add_filter(
	'gateway_ifthen_blocks_payment_method_data',
	function ( $payment_method_data ) {
		$payment_method_data['icon']        = '/whatever/path/apple-google-pix.svg';
		$payment_method_data['icon_width']  = 78;
		$payment_method_data['icon_height'] = 24;
		return $payment_method_data;
	}
);
// For Multibanco use multibanco_ifthen_blocks_payment_method_data
// For MB WAY use mbway_ifthen_blocks_payment_method_data
// For Credit card use creditcard_ifthen_blocks_payment_method_data
// For Payshop use payshop_ifthen_blocks_payment_method_data
// For Cofidis Pay use cofidispay_ifthen_blocks_payment_method_data