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Avoid Stack Overflow in Bigint Conversion

Avoid possible stack overflow in bigint conversion. Big integers are experimental. #17269 (flynn).
Added a safeguard to prevent potential stack overflow errors during conversion of big integers in ClickHouse.

Why it matters

Big integers support in ClickHouse is experimental, and this feature addresses stability issues by avoiding stack overflow during bigint conversion. This ensures more reliable processing of large integer values.

How to use it

No specific user action is required as this is an internal stability improvement to the bigint conversion process. Users working with big integers will benefit automatically once the new version is deployed.