ISSUE-6468: Unable to create partitioned topic which is a substring of an existing topic

[sijie]

Original Issue: apache#6468

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Describe the bug
Unable to create partitioned topic which is a substring of an existing topic

To Reproduce

1. Create a partitioned topic using below command
   ./pulsar-admin topics create-partitioned-topic persistent://public/default/create_substring_topic -p 1
2. Create another partitioned topic using below command. The topic name is a substring of above created topic

./pulsar-admin topics create-partitioned-topic persistent://public/default/substring_topic -p 1

Below error is thrown in the console

10:14:38.692 [AsyncHttpClient-5-1] WARN org.apache.pulsar.client.admin.internal.BaseResource - [https://itomdipulsar-proxy:8443/admin/v2/persistent/public/default/substring_topic/partitions] Failed to perform http put request: javax.ws.rs.ClientErrorException: HTTP 412 Precondition Failed
Already have topic persistent://public/default/create_substring_topic-partition-0 which contains partition suffix '-partition-' and end with numeric value, Creation of partitioned topic substring_topic could cause conflict.

Reason: Already have topic persistent://public/default/create_substring_topic-partition-0 which contains partition suffix '-partition-' and end with numeric value, Creation of partitioned topic substring_topic could cause conflict.

Expected behavior
Partitioned topic should get created even if its a substring of existing topic