Support chained expectations in MockClient

[codingkiddo]

Summary

Adds support for chained MockClient expectations when multiple expectations are registered for the same request.

Motivation

Previously, duplicate expectations for the same method/path could result in the later expectation overriding the earlier one. This made it difficult to model ordered responses for repeated calls to the same endpoint.

Fixes #531.

Changes

• Updated mock request matching to keep equal-score expectations in registration order.
• Updated the duplicate expectation test to verify ordered response consumption.
• Preserved existing verification behavior for consumed expectations.

Testing

mvn -pl unirest-modules-mocks test

[ryber]

Thanks, I have a few housekeeping things I'm going to add and then I will cut a release. This will need to be a minor bump since it does change behavior and may cause failing tests for some users

[codingkiddo]

Thanks! That makes sense.

I agree this is a behavior change, so a minor version bump sounds appropriate. Glad to see it will be included in the next release.