FIX: '500' server error is returned for 'Create a new workflow using standard operators of orchestrator' request

'500' error is returned for 'Create a new workflow using standard operators of orchestrator' request when body is populated with only workflowName:

{ "workflowName": "test" }

Error details:

curl --location 'https://osdu.centralus.cloudapp.azure.com/api/workflow/v1/workflow/system' \
--header 'accept: /' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer some token' \
--data '

{   "workflowName": "test" }
'