Improvements to the OpenAPI Docs (#14754)

* Ensure APIS only can produce one response type

* Ensure APIs document Unauthorized and Forbidden results

* If a controller constructor injects IAuthorizationService we assume the actions can return forbidden

* Updated OpenApi.json

* OpenApi.json

* Update OpenApi.json

* Update OpenApi.json

Author: bergmania

src/Umbraco.Cms.Api.Management/Controllers/ManagementApiControllerBase.cs

@@ -22,6 +22,7 @@ namespace Umbraco.Cms.Api.Management.Controllers;
 [MapToApi(ManagementApiConfiguration.ApiName)]
 [JsonOptionsName(Constants.JsonOptionsNames.BackOffice)]
 [AppendEventMessages]
+[Produces("application/json")]
 public abstract class ManagementApiControllerBase : Controller, IUmbracoFeature
 {
     protected IActionResult CreatedAtId<T>(Expression<Func<T, string>> action, Guid id)