bugs.gh_8589_test. PERCENT_RANK may return NaN instead of 0

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Full history of outcomes and elapsed time, ms:
NN SNAP_INFO CS_outcome SS_outcome CS_run_time SS_run_time CS_run_beg CS_run_end SS_run_beg SS_run_end
1 4.0.6.3189 2025.02.25 1a1a5 F F 608 475 2025.06.29 15:54:55.482 2025.06.29 15:54:56.090 2025.06.29 14:41:02.683 2025.06.29 14:41:03.158

Elapsed time, ms. Chart for last 1 runs:

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