[prism] org.apache.beam.sdk.transforms.ParDoSchemaTest - UserCoder not a row coder exceptions.

[lostluck]

java.lang.IllegalStateException: Output with tag Tag must have a schema in order to call getRowReceiver

Ultimately because getRowReceiver code path SDK side isn't friendly to LengthPrefix wrapping of row coders.

Applies to the following tests.

'org.apache.beam.sdk.transforms.ParDoSchemaTest.testReadAndWrite',
'org.apache.beam.sdk.transforms.ParDoSchemaTest.testReadAndWriteMultiOutput',
'org.apache.beam.sdk.transforms.ParDoSchemaTest.testReadAndWriteWithSchemaRegistry',