fix(pt): remove deprecating torch.norm (#4233)

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-->

## Summary by CodeRabbit

- **Chores**
- Updated the normalization method for improved consistency and
potential optimization.
	- Minor code formatting adjustments for enhanced readability.
- Ensured compatibility with existing function calls by preserving
parameters and return types.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Co-authored-by: Han Wang <[email protected]>

deepmd/pt/utils/nlist.py

@@ -457,7 +457,7 @@ def extend_coord_with_ghosts(
         xyz = xyz.view(-1, 3)
         xyz = xyz.to(device=device, non_blocking=True)
         # ns x 3
-        shift_idx = xyz[torch.argsort(torch.norm(xyz, dim=1))]
+        shift_idx = xyz[torch.argsort(torch.linalg.norm(xyz, dim=-1))]
         ns, _ = shift_idx.shape
         nall = ns * nloc
         # nf x ns x 3