functional.sqlancer.tidb_15844_test. NATURAL RIGHT JOIN results in an unexpected "Unknown column" error

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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 P P 603 406 2025.06.30 13:28:09.688 2025.06.30 13:28:10.291 2025.06.30 12:27:14.978 2025.06.30 12:27:15.384

Elapsed time, ms. Chart for last 1 runs:

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