So do the Jews of today have a claim on the historic Land of Israel according to Biblical promise and the official teachings of the RCC?
The Church teaches that all God's promises to them are real and eternal.
The difference between the Church and post-classical Judaism is what each party believes about the identity of the Messiah who is the guarantor of these promises.
Wideawake gave you an evasive response. Let me be more direct. Jews within the Church have that claim along with the rest of the Church. Nobody outside the Church can make that claim.