POST https://{HOST}/api/workflow/v1/customOperator API should return error message with proper reason for 400 Bad Request errors

Tested on Azure : API POST https://{HOST}/api/workflow/v1/customOperator

Below are the scenarios for which the API returns 400 (Bad Request ) Response Name key is missing or empty ClassName key is missing or empty content key is missing or empty properties block is missing

Expected THe API should also return a valid message mentioning the exact reason for BadRequest