Throughput regression of hlt2_fastest_reco

Between 2024-01-24 and 2024-02-16 the reconstruction throughput reduced by -2.6% from 488.5 Hz to 475.9 Hz.

The reason could be the following warning that was not there before:

TBB Warning: The number of workers is currently limited to 19. The request for 20 workers is ignored. Further requests for more workers will be silently ignored until the limit changes.