SNOW-2430412: attributes copied for selectable and create deterministic CTE name to reduce describe query #4029
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Fixes SNOW-NNNNNNN
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two changes:
under the parameter protection of CTE optimization and reduce describe query, we copy attributes when copying a snowflakeplan
this is a pattern identified in snowpark connect that the protobuf of the same spark DF can be parsed multiple times (analyzePlan and execute), leading to dataframe.query is called multiple times, generating different CTE tables