Posture check: Azure Function App doesn't have a Managed Service Identity
Query: ```config from cloud.resource where cloud.type = 'azure' AND api.name = 'azure-app-service' AND json.rule = properties.state equal ignore case "Running" AND kind contains "functionapp" AND kind does not contain "workflowapp" AND kind does not equal "app" AND (identity.type does not exist or identity.principalId is empty)```