Saudi Arabia has been working with Israel secretly over the last few years to counter Iran. A Saudi-Israel treaty is pretty close to being signed within the next year or so. Israel has not opposed the Saudi arms sale by the US. In fact, Israel has asked Biden to maintain US support for Saudi Arabia:
Saudi Arabia continues to be the main exporter of Islamic extremism all over the world. It has a worse human rights record than Iran and that is quite a (negative) accomplishment. And unlike Bahrain, UAE, Sudan, and Morocco, Saudi Arabia matters — it has double the GDP of Israel, 3x the defense budget, and 4x the population.