Add parameter to prevent model from being saved to registry in get

[JulianVennen]

No description provided.

[Copilot]

Pull request overview

Adds an option to GenericModel::get() to optionally avoid persisting fetched models into the ModelRegistry, and introduces test coverage for the new registry behavior.

Changes:

• Extend GenericModel::get() with a new $saveToRegistry parameter and adjust registry lookup behavior when $update is true.
• Add a new PHPUnit test validating registry save/refresh behavior, including the new “don’t save” mode.
• Enable registry usage in the test setup to exercise registry-related behavior.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
src/GenericModel.php	Adds $saveToRegistry parameter and updates registry interaction logic in get()
test/tests/TestDriverTest.php	Enables registry in setup and adds testGetWithRegistry() to validate registry semantics

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