There isn’t anything built into the SmartThings system to do this. The main reason is probably because you can kill the battery life on battery-operated sensors if you keep asking them “are you there?” Too often.
Some people have written a “wellness check” smart app for their own use, hopefully somebody will chime in. They usually aren’t complex, they just ping the device and see if they get a response. And if not, do some kind of notification process.
I think some people have also done one that looks at activity entries in the log, which would be easier on the battery life, but somewhat more complex to write.
So I think you can set one up, particularly if you’re only going to use it occasionally like your vacation example.
Just know that if you run it all the time, it becomes a self-fulfilling prophecy – – you kill the device because you run down the battery by asking the device if it’s still alive.