Can't get schema info with topic partition

[codelipenghui]

Describe the bug

If topic is a partitioned topic, use topic name can get schema info correct. But if use topic partition (e.g. persistent://my-tenant/my-namespace/my-topic-partitiion-0), can't get a schema info.

To Reproduce
1.create a new partitioned topic
2.create producer with schema
3.use pulsar admin to get schema info with topic partition

Expected behavior

If use topic partition to get schema info should return the partitioned topic schema info.

[codelipenghui]

@congbobo184 please take a look this issue.

[sijie]

@codelipenghui nice catch!