[BUG] [API Management] polling response didn't respect the format in new api version

[ChenxiJiang333]

API Spec link

https://github.com/Azure/azure-rest-api-specs/blob/main/specification/apimanagement/resource-manager/Microsoft.ApiManagement/stable/2024-05-01/apimnamedvalues.json#L209

API Spec version

2024-05-01

Describe the bug

original issue: Azure/azure-sdk-for-python#40909

Calling the api to get operation result for a long operation in api version 2024-05-01, the response doesn't respect the right format, which causes the exception while polling for the results though SDK. The api works fine in older api versions.

Expected behavior

It should return {"status": "Succeeded"}

Actual behavior

It returns {"value":[]}

Reproduction Steps

First call API: https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/namedValues/{namedValueId}?api-version=2024-05-01

Then get the operation status by calling: https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/tenant/operationResults/5c730e343244df1b9cb56e85?api-version=2024-05-01

Receive {"value":[]}

Environment

No response

[jlasdev]

Having the same issue