pgsql: Fix potential crash after constraint violation errors in partiti

Fix potential crash after constraint violation errors in partitioned tables. During the reporting of constraint violations for partitioned tables, ExecPartitionCheckEmitError(), ExecConstraints(), ExecWithCheckOptions() set the slot descriptor of the input slot to the root partition's tuple desc.

pgsql: Fix potential crash after constraint violation errors in partiti

Fix potential crash after constraint violation errors in partitioned tables. During the reporting of constraint violations for partitioned tables, ExecPartitionCheckEmitError(), ExecConstraints(), ExecWithCheckOptions() set the slot descriptor of the input slot to the root partition's tuple desc.