[compiler-rt] [RTSan][Apple] Disable AccessingALargeAtomicVariableDiesWhenRealtime (PR #129309)

[Chris Apple via llvm-commits]

cjappl wrote:

Great sleuthing @davidtrevelyan 

My 2c is that we should intercept this new method for now if that fixes the problem. In the future if the implementation changes again to ANOTHER approach we should cross the bridge of something more durable. 

If this ends up being the long terms stable approach from MacOS the simple solution is great.

Looking at that other PR now. 

https://github.com/llvm/llvm-project/pull/129309