[ISSUE #14479] Fix typo and improve code quality in health check processors

[DocJlm]

What is the purpose of the change

Fix typo, incorrect Javadoc, and improve resource management in health check processors under the naming module. Resolves #14479.

• Fix typo: rename deepth to depth in HttpHealthCheckProcessor and MysqlHealthCheckProcessor loop variables
• Fix incorrect Javadoc: MysqlHealthCheckProcessor was documented as "TCP health check processor" instead of "MySQL health check processor"
• Refactor MysqlCheckTask to use try-with-resources for Statement and ResultSet, ensuring proper resource cleanup and reducing boilerplate code in the finally block

Brief changelog

• HttpHealthCheckProcessor.java: Fix variable name typo (deepth → depth)
• MysqlHealthCheckProcessor.java: Fix Javadoc, fix typo, refactor to try-with-resources

Verifying this change

This is a code quality improvement. The logic remains the same, only resource management pattern and naming are improved. Existing tests cover the functionality.

• Make sure there is a Github issue filed for the change.
• Format the pull request title like [ISSUE #14479] Fix typo and improve code quality in health check processors.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• This change does not alter logic, only fixes typo, Javadoc, and resource management pattern, so no new unit tests are needed.

[CLAassistant]

All committers have signed the CLA.

[github-actions]

Thanks for your this PR. 🙏
Please check again for your PR changes whether contains any usage/api/configuration change such as Add new API , Add new configuration, Change default value of configuration.
If so, please add or update documents(markdown type) in docs/next/ for repository nacos-group/nacos-group.github.io

---

感谢您提交的PR。 🙏
请再次查看您的PR内容，确认是否包含任何使用方式/API/配置参数的变更，如：新增API、新增配置参数、修改默认配置等操作。
如果是，请确保在提交之前，在仓库nacos-group/nacos-group.github.io中的docs/next/目录下添加或更新文档（markdown格式）。

[KomachiSion]

Please Fix the CI problem. @DocJlm

[DocJlm]

Fixed. Removed the unused import com.alibaba.nacos.naming.misc.Loggers that was left over after the try-with-resources refactoring. @KomachiSion Could you please approve the workflows and re-review? Thanks

[KomachiSion]

@DocJlm Thanks

[wuyfee]

$\color{red}{FAILURE}$
DETAILS
✅ - docker: success
❌ - deploy (standalone & cluster & standalone_auth): failure
❌ - e2e-java-test (standalone & cluster & standalone_auth): skipped
❌ - e2e-go-test (standalone & cluster): skipped
❌ - e2e-cpp-test (standalone & cluster): skipped
❌ - e2e-csharp-test (standalone & cluster): skipped
❌ - e2e-nodejs-test (standalone & cluster): skipped
❌ - e2e-python-test (standalone & cluster): skipped
✅ - clean (standalone & cluster & standalone_auth): success