fix: element replaceChildren() not supported by salesforce (#895)

- we can remove `.replaceChildren()` that is not supported in Salesforce (it basically doesn't like any functions using Node instead of Element), however we can simply replace the usage with our own `Utils.emptyElement(container);`

Author: ghiscoding

slick.grid.js

@@ -2203,7 +2203,7 @@ if (typeof Slick === "undefined") {
         _bindingEventService.unbindByEventName(column, 'mouseleave', handleHeaderMouseHoverOff);
       });
 
-      _container.replaceChildren();
+      utils.emptyElement(_container);
       _container.classList.remove(uid);
 
       if (shouldDestroyAllElements) {