Getting Reaction in "lastMessage" in GroupChannel object

Right now in our channel list screen, we use channel.lastMessage to show the last message in that channel.

Sometimes users will just react to a message and that reaction will effectively be the last “message in that channel”. We would then like to display “{user} reacted smile to message” as the last message in that channel as if it’s the last interaction.

Is this possible? And if so how? It would be great to have it show as some property when it’s the last interaction in that channel.