Disable DispatcherServlet shouldHandleFailure

This change broke a Spring Security sample, reverting it.

See gh-13511

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/servlet/DispatcherServletAutoConfiguration.java

@@ -98,7 +98,6 @@ public class DispatcherServletAutoConfiguration {
 		@Bean(name = DEFAULT_DISPATCHER_SERVLET_BEAN_NAME)
 		public DispatcherServlet dispatcherServlet() {
 			DispatcherServlet dispatcherServlet = new DispatcherServlet();
-			dispatcherServlet.setShouldHandleFailure(true);
 			dispatcherServlet.setDispatchOptionsRequest(
 					this.webMvcProperties.isDispatchOptionsRequest());
 			dispatcherServlet.setDispatchTraceRequest(