PIP-263: Just auto-create no-partitioned DLQ And Prevent auto-create a DLQ for a DLQ

[Yubiao Feng]

Hi Pulsar Community

This thread is to start the vote for PIP 263.
I'm starting the voting process for PIP-263.

DISCUSS: https://lists.apache.org/thread/tp25lom2ggztljlo76krsldo270f293j
PR: https://github.com/apache/pulsar/pull/20445

Thanks
Yubiao Feng