catch exception, column output change

[rhaffar]

• Snowflake throws an error for diff calcs on non-numeric columns in the form of a ProgrammingError, but it seems on rare occasion it will throw the exact same error with the same message as a DatabaseError. Unsure as to what's happening in the Snowflake backend to cause this, but we should catch both to be safe. SnowparkClientException catch has been removed - it was intended to catch general Snowpark exceptions, but these diff failures come from Snowflake itself failing to calculate the diff, not from Snowpark.
• Adding column name display

Will post passing tests as soon as tests are done running