WPForms: change the key of a country from country code to country name

wpforms-change-country-code.php

<?php

add_filter( 'wpforms_countries', function ( $countries ) {

	$key_from = 'CA';

	if ( array_key_exists( $key_from, $countries ) ) {
		$keys = array_keys( $countries );

		$keys[ array_search( $key_from, $keys, true ) ] = 'Canada';

		return array_combine( $keys, $countries );
	}

	return $countries;
} );