No, because the police will tell you to not tell anyone about the court order. If you do so (for example using a warrant canary), you will be in big trouble. Those canaries were always a convenient fiction, almost to the point of it being entirely in question whether or not this fiction was created in good faith.
( https://www.eff.org/deeplinks/2014/04/warrant-canary-faq )
Your life quality will take a sharp negative dive if you don't conform to the spirit of what they ask you. Whether or not such things are legal really is immaterial: You will be in trouble anyway. As such, I dislike advice that leans on what the law says.
Which can mean "no company has tried" or "no TLA has tried".
If the canary doesn't receive a signed message within X amount of days, the canary sings.
Nobody can force someone to do work or self-incriminate.
Seems like a catch 22 that it's a lose-lose.