It’s not like we really have a budget to hit, we can just fund both. If anything, Republicans in the House who are arguing that we need to spend the money here instead of on military aid will lose that talking point if they vote for Israeli aid. And the Senate who wants Ukrainian money can tie the two together to force more money to Ukraine.
Not that it can’t be Russian-encouraged, they probably do want the US preoccupied somewhere else, but Hamas has their own reasons for launching the attack, not everything has to be about the United States.