Fix: Improve Databricks Catalog setting

[eakmanrq]

I tested in Databricks running this:

%sql
USE CATALOG example;

And then

spark.read.table(table)

That table only exists in example and it worked. So you can set USE CATALOG and have it work across both SQL and Dataframe operations. The trick though is that you must be on Unity Catalog for this to work so we initially try setCurrentCatalog and then fallback to this.