Fixed the json options to be isolated (#375)

Author: arcenox

src/TickerQ.Dashboard/DependencyInjection/ServiceCollectionExtensions.cs

@@ -28,6 +28,7 @@ internal static void AddDashboardService<TTimeTicker, TCronTicker>(this IService
                 config.DashboardJsonOptions = new JsonSerializerOptions
                 {
                     PropertyNameCaseInsensitive = true,
+                    PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
                     Converters = { new StringToByteArrayConverter() }
                 };
             }