[CI][Diffusion] Restore Krea2 model type marker (#8164)

Signed-off-by: andyluo7 <andy.luo@amd.com>

tests/model_tests/diffusion/model_settings.py

@@ -179,5 +179,6 @@ DIFFUSION_TEST_SETTINGS = {
         model="krea/Krea-2-Turbo",
         builder=diff_model_builders.tiny_krea2_builder,
         supported_tasks=[DiffusionTasks.TEXT_TO_IMAGE],
+        model_type_marker=ModelTypeMarker.DIFFUSION,
     ),
 }