The Israeli Supreme Court has already rejected the petition to hold the korban pesach. This happens every year: some group plans to hold it, the police threaten arrests, the group petitions the Supreme Court, the Supreme Court sides with the cops. There is nothing new under the sun.
Have you ever read a ruling of any kind about the entire Jewish population of Jerusalem being required to evacuate the city for the duration of Pesach if Har HaBayit were in Jewish hands but no qorban pesach was brought?