I'm not in a position to look up exactly when it was merged, but I'm pretty confident that shouldn't be needed anymore. The entry point on 19 should do the same restart juggling it does on Windows if the environment isn't correct for some other reason. I can double check later if you want to provide details.

I encountered the issue when our (not Ubuntu, not 24.04) LTS upstream backported security fixes that included the mmap changes without updating universe to include a clang version with the fixes. Any developers diligent enough to update and run sanitisers locally started seeing intermittent crashes.