Fix build failure due to linting from ssl_normalize_hostname change

[fangnx]

Move to unit test

[confluent-cla-assistant]

🎉 All Contributor License Agreements have been signed. Ready to merge.
_{Please push an empty commit if you would like to re-run the checks to verify CLA status for all contributors.}

[Copilot]

Pull Request Overview

This PR fixes a build failure caused by linting issues in the SSL hostname normalization code. The changes address code formatting to comply with the project's linting standards.

Key changes:

• Reformatted function declaration to fit on a single line
• Fixed line wrapping and indentation in conditional expressions and function calls

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[justsmth]

Thanks for posted this PR. This might be the same issue that's causing CI failures in AWS-LC's CI integration tests. For example: https://github.com/aws/aws-lc/actions/runs/19370633236/job/55425386315?pr=2829

/usr/bin/ld: 0154-ssl_hostname_normalize.o: in function `test_hostname_normalize':
/home/runner/work/aws-lc/KAFKA_BUILD_ROOT/librdkafka/tests/0154-ssl_hostname_normalize.c:98:(.text+0x55b): undefined reference to `rd_kafka_ssl_normalize_hostname'
collect2: error: ld returned 1 exit status
make: *** [../mklove/Makefile.base:235: test-runner] Error 1