[Enhancement] Optimize `getClass().getSimpleName()` usage in unit test anonymous classes

### Search before asking

- [X] I had searched in the [issues](https://github.com/apache/eventmesh/issues?q=is%3Aissue) and found no similar issues.

### Enhancement Request


In an anonymous class, the `getClass().getSimpleName()` method will return an empty string, causing the log to fail to record the class name.

### Describe the solution you'd like

Optimize logging methods.

### Are you willing to submit PR?

- [ ] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) *

The issue names no files or tests. Search the unit tests for getClass().getSimpleName() calls in anonymous classes, reproduce the empty-name logging case, and identify the affected logging methods; done means anonymous-class logging records a non-empty class name and the relevant tests pass.

Written by the indexing model from the issue text.