Impossible use LineAwesome icons for EnhancedColumn#setFilterIcon

Hello.

Library class.:
```
org.vaadin.lineawesome.LineAwesomeIcon
```

It's from library https://vaadin.com/directory/component/line-awesome-icons-for-vaadin which Vaadin added to starting projects.

Impossible use due EnhancedColumn required `com.vaadin.flow.component.icon.Icon` instance, but LineAwesomeIcon return `com.vaadin.flow.component.icon.SvgIcon`

Thanks ;)