Merge forwardport of magento/magento2#13084 to 2.3-develop branch

Applied pull request patch https://github.com/magento/magento2/pull/13084.patch (created by @mayankzalavadia) based on commit(s):
  1. f36d2ce

Fixed GitHub Issues in 2.3-develop branch:
  - magento/magento2#5129: Product details page zoom issue when dropdown menu have overlap area with it. (reported by @gizmocn)

Author: magento-engcom-team

lib/web/magnifier/magnifier.js

@@ -588,7 +588,7 @@
             _init($box, gOptions);
         });
 
-        $(document).on('mousemove', onMousemove);
+        $box.on('mousemove', onMousemove);
         _init($box, gOptions);
 
     }