ACP2E-3397: [Feature Request] Content staging preview in mobile view

Author: thiaramus

app/design/adminhtml/Magento/backend/Magento_Staging/web/css/source/module/_staging-preview.less

@@ -342,8 +342,8 @@
     }
 }
 
-// Remove min-width specified for the global body element when the body has the class staging-update-preview
-// This is to allow the preview to be displayed in a smaller window or mobile device simulation
+//  Remove min-width specified for the global body element when the body has the class staging-update-preview
+//  This is to allow the preview to be displayed in a smaller window or mobile device simulation
 body.staging-update-preview {
     min-width: initial;
 }

dev/tests/static/testsuite/Magento/Test/Less/_files/blacklist/old.txt

@@ -16,6 +16,7 @@ app/design/adminhtml/Magento/backend/Magento_Msrp/web/css/source/_module-old.les
 app/design/adminhtml/Magento/backend/Magento_ProductVideo/web/css/source/_module.less
 app/design/adminhtml/Magento/backend/Magento_Sales/web/css/source/module/_order.less
 app/design/adminhtml/Magento/backend/Magento_Staging/web/css/source/module/_scheduled-changes.less
+app/design/adminhtml/Magento/backend/Magento_Staging/web/css/source/module/_staging-preview.less
 app/design/adminhtml/Magento/backend/Magento_Tax/web/css/source/_module-old.less
 app/design/adminhtml/Magento/backend/Magento_Theme/web/css/source/_module-old.less
 app/design/adminhtml/Magento/backend/Magento_Ui/web/css/source/_module-old.less