Jews in the US really don't seem to put much value in a pro-Israel agenda, and never have. Kind of weird, but I suppose people just shoehorn jews as being adamantly pro-israel as a defining belief. Trump was just trying to pander to the jews by moving the embassy to Jerusalem, and show that he could do something nobody else had followed through on. Ultimately it was just a stupid, meaningless move that nobody really cares about.
A lot of Republican views towards Israel arent to pander to Jews, they are to pander to Evangelicals.