message: re-added missing assert.
diff: @@ -146,10 +146,9 @@ namespace NovelRT::Ecs
  _threadWorkItem[workerIndex] = systemId;
  - /*
  +
  assert(((_threadAvailabilityMap & (1ULL << workerIndex)) == (1ULL << workerIndex)) &&
  "Thread marked as busy while available!");
  - */
  _threadAvailabilityMap ^= (1ULL << workerIndex);
  /*
  assert(((_threadAvailabilityMap & (1ULL << workerIndex)) == 0) &&
  