Version 12.1 on a Mac

The question about the derivative of Abs' has been asked several times, but all previous posts dealt with Abs'[x] and my question is about Abs'[1].

It seems to me that there are no complex-numbers issues with Abs'[1], yet

 Abs'[1]//N

does not simplify to 1.0. Is there a way to overcome this?

Edit:

For me, Abs appeared as a result of calling Norm on a real vector. How do I make it use RealAbs?