az ml update error: "NameError: name 'select_load_function' is not defined"

### Describe the bug

Tryng up update my AML WS following the [AML documentation](https://learn.microsoft.com/en-us/azure/machine-learning/how-to-secure-training-vnet?view=azureml-api-2&tabs=cli%2Crequired#compute-instancecluster-with-public-ip), getting an error "name 'select_load_function' is not defined".

Tried from my computer terminal and also from the Azure Cloud Shell - same behaviour. Just installed the ml extension on my computer, so using the last version "2.26.1"

### Related command

az ml workspace update -n -g --file .yml

### Errors

The command failed with an unexpected error. Here is the traceback:
name 'select_load_function' is not defined
Traceback (most recent call last):
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\knack/cli.py", line 233, in invoke
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 664, in execute
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 731, in _run_jobs_serially
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 701, in _run_job
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 334, in __call__
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/command_operation.py", line 240, in handler
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 453, in cached_put
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 447, in _put_operation
File "C:\Users\almeneze\.azure\cliextensions\ml\azext_mlv2\manual\custom\workspace.py", line 212, in ml_workspace_update
workspace = select_load_function()(file, params_override=params_override)
^^^^^^^^^^^^^^^^^^^^
NameError: name 'select_load_function' is not defined

### Issue script & Debug output

cli.azure.cli.core.azclierror: The command failed with an unexpected error. Here is the traceback:
az_command_data_logger: The command failed with an unexpected error. Here is the traceback:
cli.azure.cli.core.azclierror: name 'select_load_function' is not defined
Traceback (most recent call last):
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\knack/cli.py", line 233, in invoke
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 664, in execute
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 731, in _run_jobs_serially
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 701, in _run_job
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 334, in __call__
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/command_operation.py", line 240, in handler
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 453, in cached_put
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 447, in _put_operation
File "C:\Users\almeneze\.azure\cliextensions\ml\azext_mlv2\manual\custom\workspace.py", line 212, in ml_workspace_update
workspace = select_load_function()(file, params_override=params_override)
^^^^^^^^^^^^^^^^^^^^
NameError: name 'select_load_function' is not defined
az_command_data_logger: name 'select_load_function' is not defined
Traceback (most recent call last):
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\knack/cli.py", line 233, in invoke
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 664, in execute
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 731, in _run_jobs_serially
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 701, in _run_job
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 334, in __call__
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/command_operation.py", line 240, in handler
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 453, in cached_put
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 447, in _put_operation
File "C:\Users\almeneze\.azure\cliextensions\ml\azext_mlv2\manual\custom\workspace.py", line 212, in ml_workspace_update
workspace = select_load_function()(file, params_override=params_override)
^^^^^^^^^^^^^^^^^^^^
NameError: name 'select_load_function' is not defined

### Expected behavior

My AML workspace would be updated and I would get a confirmation message

### Environment Summary

Python 3.9.19
azure-cli 2.61.0
core 2.61.0
telemetry 1.1.0
Extensions:
ai-examples 0.2.5
ml 2.26.1
ssh 2.0.3
Dependencies:
msal 1.28.0
azure-mgmt-resource 23.1.1

### Additional context

_No response_