resolved a 0-dim tensor slicing bug from _get_state_without_padding

[therealnaveenkamal]

fixes #7650

adding a value.dim()>0 check to prevent slicing of 0-dim tensors

cc @sfc-gh-truwase

[sfc-gh-truwase]

@therealnaveenkamal, thanks for the fix. Please address the formatting issues,.

[therealnaveenkamal]

hi @sfc-gh-truwase i think yapf check failed while loading a pickle grammar file from its cache. pre-commit passed in local.

[tohtana]

Hi @therealnaveenkamal, thank you for your contribution!
I'm not so sure about why the error doesn't show the actual formatting issue, but it seems we need space. I pushed a commit to fix it.

-            if torch.is_tensor(value) and value.dim()>0:
+            if torch.is_tensor(value) and value.dim() > 0:

[therealnaveenkamal]

@tohtana / @sfc-gh-truwase thank you.