Fixes incorrect handling of Nullable types in JSON functions in ClickHouse.
Why it matters
This improvement resolves an issue where JSON functions did not correctly process Nullable data types, potentially leading to unexpected results or errors when working with JSON data containing nullable values. It enhances reliability and correctness when parsing and querying JSON in ClickHouse.How to use it
Users benefit from this fix automatically when upgrading to the ClickHouse version including this change. No special configuration is required; JSON functions will now correctly handle Nullable inputs and outputs.