fix: Proper refresh of Groq models (#12158)

* fix: Proper refresh of Groq models

* Update groq_model_discovery.py

* Update src/lfx/src/lfx/base/models/groq_model_discovery.py

Co-authored-by: Copilot <[email protected]>

* Update src/lfx/src/lfx/base/models/groq_model_discovery.py

Co-authored-by: Copilot <[email protected]>

* Add more unit tests

* Update src/lfx/src/lfx/base/models/groq_model_discovery.py

Co-authored-by: Copilot <[email protected]>

* More thorough unit tests

* Update test_groq_model_discovery.py

* Update groq_model_discovery.py

* Update src/backend/tests/unit/groq/test_groq_model_discovery.py

Co-authored-by: Copilot <[email protected]>

* Update src/backend/tests/unit/groq/test_groq_model_discovery.py

Co-authored-by: Copilot <[email protected]>

* Update test_groq_model_discovery.py

* Update groq_model_discovery.py

* Update groq.py

* [autofix.ci] apply automated fixes

* PR review comments

* Redundant errors

* [autofix.ci] apply automated fixes

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Co-authored-by: Copilot <[email protected]>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>