bug: requested character too large for encoding in chr function

[andygrove]

Describe the bug

The following query ran without error in Spark but failed in Comet. I discovered this bug using Comet Fuzz.

SELECT chr(c8) FROM test0

Query failed in Comet: Job aborted due to stage failure: Task 12 in stage 97.0 failed 1 times, most recent failure: Lost task 12.0 in stage 97.0 (TID 878) (192.168.86.33 executor driver): org.apache.comet.CometNativeException: Execution error: requested character too large for encoding.

Steps to reproduce

No response

Expected behavior

No response

Additional context

No response

[vaibhawvipul]

This is extension to #479 and my PR #513 . Hence, I will work on this.