Handle NVMLError_NotSupported in cudf-polars (#20179)

Fixes a regression in #19895, which changed the logic for when we catch this exception and fall back to the default device memory size.

Authors:
  - Tom Augspurger (https://github.com/TomAugspurger)

Approvers:
  - Matthew Murray (https://github.com/Matt711)

URL: #20179

Author: TomAugspurger

python/cudf_polars/cudf_polars/utils/config.py

@@ -89,7 +89,11 @@ def get_total_device_memory() -> int | None:
     maybe_handle = get_device_handle()
 
     if maybe_handle is not None:
-        return pynvml.nvmlDeviceGetMemoryInfo(maybe_handle).total
+        try:
+            return pynvml.nvmlDeviceGetMemoryInfo(maybe_handle).total
+        except pynvml.NVMLError_NotSupported:  # pragma: no cover
+            # System doesn't have proper "GPU memory".
+            return None
     else:  # pragma: no cover
         return None