In fact, as Stan Urman has mentioned, there have been quite a lot of resolutions passed about Palestinian refugees and none that have specifically mentioned Jewish refugees. There's Resolution 242 of the Security Council that is generic in nature and was purposefully intended to be generic and encompass both populations.
Unfortunately, what we've seen in the Middle East is not only the Arab League and Islamic Conference states, many of them engaged in military war against Israel, but an attempt to destroy the state of Israel by other means, through demonization and delegitimization. They often do that through using their voting power at the General Assembly, and in the specialized bodies.
The UN Human Rights Council, since its inception replacing the commission, has had a majority of states from the Organization of Islamic Conference because they are a majority of each the regional blocs, of the African and Asian blocs, and those two blocs have a majority of the council.
What we see is this endless parade of not just resolutions about Palestinian refugees, but condemnation of Israel for a wide variety of ways that are simply the continuation of the wars against Israel by other means.
Canada, when it was on the council, was frankly the only country in many cases that was voting against these resolutions and making statements about it. I think Canada now has an important and significant history to live up to in this area of standing up against the delegitimization of Israel.
Part of it is the focus on the Palestinian refugees as a victim population to the exclusion of Jewish refugees, which plays into this I would say false narrative of the Jews as perpetrators.