[TRACKING ISSUE] Fix the `ReliableTopicConfig.setName` method to allow empty names [HZ-2274] [API-2172]

[hz-devops-test]

The tracking issue for the Java side PR.

See hazelcast/hazelcast#26010 for details.

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Fixed the ReliableTopicConfig.setName method to allow empty namesThe method is also inline with the constructor which accepts empty name.

fixes https://hazelcast.atlassian.net/browse/HZ-2274