No it has not and it is indeed not easy to implement this module in native mobile. I know it can be done because some people have got it working. There is a blog on medium though from somebody on the same path as you. But it is using OAuth to do it: https://medium.com/mendix/mendix-native-mobile-with-sso-3b86b962a899
But if it has to be SAML you are out of luck but the medium post does give you pointers on how to start. And may be somebody else will chime in here that already has done it.