Improve testing for authorization to prevent regressions in topic operations related to subscriptions

### Search before asking

- [X] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar.

### Motivation

In PR https://github.com/apache/pulsar/pull/19176, I fixed a minor regression in our authorization code base related to topic operations. We should have better tests or possibly a better design to make sure we catch these regressions before they are merged.

The tests should also cover cases seen in https://github.com/apache/pulsar/pull/17123 and in https://github.com/apache/pulsar/pull/19184

### Solution

Improve tests or improve the framework.

### Alternatives

_No response_

### Anything else?

_No response_

### Are you willing to submit a PR?

- [X] I'm willing to submit a PR!