fix seed 0 setting bug

hydra_node/models.py

@@ -71,7 +71,7 @@ class StableDiffusionModel(nn.Module):
     @torch.no_grad()
     def sample(self, request):
         request = DotMap(request)
-        if request.seed:
+        if request.seed is not None:
             torch.manual_seed(request.seed)
             np.random.seed(request.seed)