spark `width_bucket` need to have custom nullability

[rluvaton]

Describe the bug

the UDF uses the default is_nullable which is always true which is not the case

To Reproduce

No response

Expected behavior

No response

Additional context

No response

[Eshaan-byte]

take

[rluvaton]

Looking at Spark:
Width Bucket always report nullable: true, sorry for that
https://github.com/apache/spark/blob/a189a450e9906362749e3ad3d022f593a2a562e4/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala#L1884

[rluvaton]

There should be a PR opened in spark for changing the nullability to depend on the child IMO