style(experimental): ignore typing of custom model

Author: aleneum

tests/test_experimental.py

@@ -100,7 +100,7 @@ def test_generate_base_model_callbacks(self):
         with open("foo.py", "w") as f:
             f.write(generate_base_model(simple_config))
 
-        class Model(mod.BaseModel):
+        class Model(mod.BaseModel):  # type: ignore
 
             @staticmethod
             def call_this() -> None: