fix(recaptcha): don't create button clone if not using v2

Author: dkoo

includes/class-modal-checkout.php

@@ -1922,11 +1922,15 @@ public static function order_button_html( $html ) {
 		$class_prefix = self::get_class_prefix();
 
 		$newspack_ui_html = preg_replace( '/class=".*?"/', "class='{$class_prefix}__button {$class_prefix}__button--primary {$class_prefix}__button--wide'", $html );
-		$cloned_button    = preg_replace( '/type="submit"/', 'type="button"', $newspack_ui_html );
-		$cloned_button    = preg_replace( '/id="place_order"/', '', $newspack_ui_html );
-		$cloned_button    = preg_replace( '/name=".*?"/', 'id="place_order_clone"', $newspack_ui_html );
 
-		return $cloned_button . $newspack_ui_html;
+		if ( class_exists( 'Newspack\Recaptcha' ) && \Newspack\Recaptcha::can_use_captcha( 'v2' ) ) {
+			$cloned_button    = preg_replace( '/type="submit"/', 'type="button"', $newspack_ui_html );
+			$cloned_button    = preg_replace( '/id="place_order"/', '', $newspack_ui_html );
+			$cloned_button    = preg_replace( '/name=".*?"/', 'id="place_order_clone"', $newspack_ui_html );
+			$newspack_ui_html = $cloned_button . $newspack_ui_html;
+		}
+
+		return $newspack_ui_html;
 	}
 
 	/**