Fixed WorkflowDelayWithDateTimeInvocationDelaysFunction test

Author: stidsborg

Core/Cleipnir.ResilientFunctions.Tests/TestTemplates/RFunctionTests/PostponedTests.cs

@@ -818,8 +818,7 @@ protected async Task WorkflowDelayWithDateTimeInvocationDelaysFunction(Task<IFun
             store,
             new Settings(
                 unhandledExceptionHandler.Catch,
-                leaseLength: TimeSpan.Zero,
-                watchdogCheckFrequency: TimeSpan.FromMilliseconds(100)
+                watchdogCheckFrequency: TimeSpan.FromMilliseconds(250)
             )
         );
         var tomorrow = DateTime.UtcNow.Add(TimeSpan.FromDays(1));