[BUG] not match primitive schema of byte array

[wuzhanpeng]

Describe the bug

The class and schema is not match for byte array in PulsarPrimitiveSchema.

https://github.com/apache/pulsar/blob/0bc45b54f29c5ffa1918e49aa4a341f70679162a/pulsar-client/src/main/java/org/apache/pulsar/client/impl/schema/BytesSchema.java#L50-L53

The return type of method decode is byte[], but the class name in PulsarPrimitiveSchema is Byte[], which will cause type conversion exceptions during task execution.

To Reproduce

Create a source like:

FlinkPulsarSource<Byte[]> source = new FlinkPulsarSource<>(
                        serviceUrl,
                        adminUrl,
                        new PulsarPrimitiveSchema<>(Byte[].class),
                        properties);

then would receive ClassCastException.