Potential regression induced by "CLN: Enforce read_csv(keep_date_col, parse_dates) deprecations (#58622)"

[DeaMariaLeon]

PR #58622

@mroeschke

"io.csv.ReadCSVConcatDatetimeBadDateValue.time_read_csv (Python) with bad_date_value=''": "http://57.128.112.95:5000/compare/benchmarks/0663e9c72c9a797f80008f35f8dd44de...0663e9d85bd370f78000b2b422a0e080",
"io.csv.ReadCSVConcatDatetimeBadDateValue.time_read_csv (Python) with bad_date_value='nan'": "http://57.128.112.95:5000/compare/benchmarks/0663e9c72b7574148000e742ce0eaed8...0663e9d85aa97a6d80002f9e1b52ae8b"