Add inverse noise scaling function.

comfy/model_sampling.py

@@ -20,6 +20,9 @@ class EPS:
         noise += latent_image
         return noise
 
+    def inverse_noise_scaling(self, sigma, latent):
+        return latent
+
 class V_PREDICTION(EPS):
     def calculate_denoised(self, sigma, model_output, model_input):
         sigma = sigma.view(sigma.shape[:1] + (1,) * (model_output.ndim - 1))