[Spark 4.0] Add string collation support

### What is the problem the feature request solves?

A major new feature of Spark 4.0.0 is string collation support. Unfortunately, DataFusion does not support string collation (https://github.com/apache/datafusion/issues/9192); therefore, Comet does not support it either.

### Describe the potential solution

In the short term, we likely need to fall back to Spark for any queries involving string collation.

### Additional context

https://www.databricks.com/blog/introducing-collations-databricks

https://docs.databricks.com/aws/en/sql/language-manual/sql-ref-collation