Fix test_vision_manual.py collected by pytest

Rename test_model_with_image to run_model_with_image so pytest
does not collect it as a test function. It is a helper called
from main() when the script is run directly.

Author: fede-kamel

libs/oci/tests/integration_tests/chat_models/test_vision_manual.py

@@ -102,7 +102,7 @@ def create_solid_color_image(color: str = "red", size: tuple = (100, 100)) -> by
     return buffer.getvalue()
 
 
-def test_model_with_image(
+def run_model_with_image(
     model_id: str, image_bytes: bytes, prompt: str, image_desc: str
 ) -> dict:
     """Test a vision model with an image."""
@@ -164,7 +164,7 @@ def main():
         image_bytes = create_solid_color_image(color)
 
         for model_id in VISION_MODELS:
-            result = test_model_with_image(
+            result = run_model_with_image(
                 model_id,
                 image_bytes,
                 f"What color is this image? One word answer.",