Improve Date Conversion for Boundary Value 65535

Why it matters

This feature addresses issues with the conversion of the maximum allowed value for the Date type in ClickHouse. It ensures that the boundary value 65535 is correctly interpreted as the date 2149-06-06, preventing conversion errors or unexpected behavior when working with this upper limit date value.

How to use it

No explicit user action is required. The improvement is applied internally to the Date type conversion logic, so any conversion from integers to Date that involves the boundary value 65535 will automatically benefit from this fix.