[Enhancement] Support for split nameserver registration

[Ziy1-Tan]

Before Creating the Enhancement Request

• I have confirmed that this should be classified as an enhancement rather than a bug/feature.

Summary

The metadata registration fails When the number of topics registered at a time >= 7w.

Motivation

Metadata registration fails when the number of topics is too large, because the serialized size exceeds the decoded size of NettyServer.

Describe the Solution You'd Like

Split a single registration into multiple registrations to reduce the number of topics for each registration

Describe Alternatives You've Considered

When registering multiple times, it is necessary to regularly re-register failed registration.

Additional Context

No response