Good, Israel must be boycotted.
https://www.washingtonpost.com/world/interactive/2025/israel...
You do not even understand what the UN general assembly does, it expresses majority opinions, it does not make legally binding decisions. That means the UN partition plan is only what a majority considered the best solution, not a legal decisions to divide Palestine. And the Palestinians vehemently opposed that solution and later violently its implementation.
And should one really be surprised that the Arab neighbors attacked Israel? The Jews had just occupied half of the Palestinian land, violently displaced hundred thousands of Palestinians, and established their own state on Palestinian land.
Do people indigenous to a land have the right to defend their lives and property from a foreign, occupying force with violence, if necessary?
It's a shame that one's answer to this question is entirely dependent upon a bronze-age claim.