Flaky Test: tests/test_json_accessor.py

[wudidapaopao]

Description
Test name: tests/test_json_accessor.py::TestJsonExtractFloat::test_json_extract_float
Failure reason: AssertionError
CI report: https://github.com/chdb-io/chdb/actions/runs/21851758221/job/63063579672?pr=515