fix(developers): return 200 on partial provisioning failure

The approval endpoint now always returns 200 when provisioning was
attempted, with success/failure details in the response body. This
allows the SilverDESK webhook step to proceed with remaining actions
(note, reply, status change) even when individual services fail.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

BlazorApp/Endpoints/DeveloperEndpoints.cs

@@ -43,9 +43,7 @@ public static class DeveloperEndpoints
             var (success, message) = await provisioningService.ApproveApplicationAsync(
                 ticketId, desiredUsername, email, fullName);
 
-            return success
+            return Results.Ok(new { success, message });
-                ? Results.Ok(new { message })
-                : Results.Problem(message, statusCode: 502);
         });
     }
 }