ENGCOM-6215: Fix magnifier image zoom and positioning regression #25358

 - Merge Pull Request #25358 from krzksz/magento2:fix-magnifier-regression
 - Merged commits:
   1. 420ff66

Author: magento-engcom-team

lib/web/mage/gallery/gallery.less

@@ -762,6 +762,7 @@
     img {
         left: 0;
         max-width: inherit;
+        max-height: inherit;
         position: absolute;
         top: 0;
         object-fit: scale-down;