LibWeb: Implement deletion of more complex selections.

Author: https://github.com/asynts
Commit: a94a1d9f9e
Pull-request: https://github.com/SerenityOS/serenity/pull/4318
Reviewed-by: https://github.com/Lubrsi
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/linusg

Libraries/LibWeb/Page/EventHandler.cpp

@@ -422,4 +422,5 @@ void EventHandler::set_mouse_event_tracking_layout_node(Layout::Node* layout_nod
     else
         m_mouse_event_tracking_layout_node = nullptr;
 }
+
 }