Change the text for the Select Options button when using Composite Products

wc-composite-products-change-select-options-text.php

add_filter( 'woocommerce_product_add_to_cart_text', function( $text ) {
	global $product;
	if ( $product->is_type( 'composite' ) ) {
		$text = $product->is_purchasable() ? __( 'Custom options text', 'woocommerce' ) : __( 'Read more', 'woocommerce' );
	}
	return $text;
}, 10 );