Fix explicit local code resolution for tokenizers and image processors

[hmellor]

In #45094 I introduced some errors to the remote code resolution when trying to detect if local code belonged to Transformers or not.

These tests were:

pytest tests/models/cohere_asr/test_modeling_cohere_asr.py::CohereAsrIntegrationTest::test_longform_english
pytest tests/models/cohere_asr/test_modeling_cohere_asr.py::CohereAsrIntegrationTest::test_non_english_with_punctuation
pytest tests/models/pp_ocrv5_mobile_rec/test_modeling_pp_ocrv5_mobile_rec.py::PPOCRV5MobileRecModelIntegrationTest::test_inference_text_recognition_head
pytest tests/models/pp_ocrv5_server_rec/test_modeling_pp_ocrv5_server_rec.py::PPOCRV5ServerRecModelIntegrationTest::test_inference_text_recognition_head
pytest tests/models/slanext/test_modeling_slanext.py::SLANeXtModelIntegrationTest::test_inference_table_recognition_head
pytest tests/models/timm_wrapper/test_modeling_timm_wrapper.py::TimmWrapperModelIntegrationTest::test_inference_with_pipeline

This PR fixes all of these.

(The timm test still appears to fail, but not for the reason that was caused by the linked PR)

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View the CircleCI Test Summary for this PR:

https://huggingface.co/spaces/transformers-community/circle-ci-viz?pr=45169&sha=cf7e05

[vasqu]

Thanks for the fix 🫡