I have found a hack that makes this work!
inside /Users/Shared/Epic Games/UE_5.4/Engine/Config/Apple/Apple_SDK.json there was a MaxVersion for the version of XCode supported. I changed it to 16 and I can now run the editor. Of course seeing as this is untested, it is very much may break at any moment, but lets me continue on my learning stuff, so I am happy!
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