[SQL] Regression in AQEShuffleReadExec

I am currently testing the RAPIDS Accelerator for Apache Spark with the Spark 3.2 release candidate and there is a regression in AQEShuffleReadExec where it now throws an exception if the shuffle's output partitioning does not match a specific list of schemes.

The problem can be solved by returning UnknownPartitioning, as it already does in some cases, rather than throwing an exception.