Fix magnifier image zoom and positioning regression

Fixes #25027

Author: Mateusz Krzeszowiak

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;