SCOPED_ATTACH_TASK cannot be nested, but SCOPED_SWITCH_THREAD_MEM_TRACKER_LIMITER can continue to be called, so attach_limiter_tracker may be nested.
SCOPED_ATTACH_TASK cannot be nested, but SCOPED_SWITCH_THREAD_MEM_TRACKER_LIMITER can continue to be called, so attach_limiter_tracker may be nested.