[FEA]: Switch to entropy-based stopping criterion

[gevtushenko]

Is this a duplicate?

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Area

General CCCL

Is your feature request related to a problem? Please describe.

Entropy-based stopping criterion was recently merged into NVBench. Since it's opt-in for the time being, CCCL benchmarks are still using stdrel criterion.

Describe the solution you'd like

CCCL benchmarks are using entropy-based stopping criterion.

Describe alternatives you've considered

No response

Additional context

No response