There is a crash in `Exception.CaptureDispatchState` when called from one thread at the same time another calls into `Exception.RestoreDispatchState`. The
reason for the crash is due to the way we do not update `foreignExceptionFrames` in a thread-safe way.  `foreignExceptionFrames` is used in both methods and can crash when the size changes before the array is copied.

The fix is to lock when reading from and writing to `foreignExceptionFrames`.

Fixes #70081