I don’t think the real momentary button would work since it’s not a motion or contact sensor. This is the feature that these device handlers take advantage of:
Alexa now supports motion and contact sensors connected to a SmartThings Hub. Play a welcome message when the door opens, turn on a connected light when motion is detected, or ask, “Alexa, is the back door open?” To get started, connect a Works with SmartThings contact or motion sensor to the SmartThings Hub, following the manufacturer’s instructions, then link the SmartThings skill using the Alexa app.