Add handling for NVMLError_NotSupported in get_device_memory_info (#5890)

- adds a specific exception handler for NVMLError_NotSupported when
  attempting to get device memory information via NVML. This improves
  error handling for systems without dedicated frame buffer

Signed-off-by: Janusz Lisiecki <[email protected]>

Author: JanuszL

dali/test/python/test_utils.py

@@ -69,6 +69,9 @@ def get_device_memory_info(device_id=0):
     except ModuleNotFoundError:
         print("Python bindings for NVML not found")
         return None
+    except pynvml.NVMLError_NotSupported:
+        print("nvmlDeviceGetMemoryInfo not supported on this system")
+        return None
 
 
 def get_gpu_name_from_nvml():