Describe the bug

Go to https://addonsv25-staging.flowingcode.com/year-month-calendar/date-picker and try to move with the date picker arrows. Exception appears:

java.lang.RuntimeException: java.lang.ClassCastException: class com.flowingcode.vaadin.jsonmigration.ElementalObjectNode cannot be cast to class elemental.json.JsonObject (com.flowingcode.vaadin.jsonmigration.ElementalObjectNode and elemental.json.JsonObject are in unnamed module of loader org.springframework.boot.loader.launch.LaunchedClassLoader @568db2f2)
at com.vaadin.flow.server.communication.rpc.PublishedServerEventHandlerRpcHandler.invokeMethod(PublishedServerEventHandlerRpcHandler.java:229)
at com.vaadin.flow.server.communication.rpc.PublishedServerEventHandlerRpcHandler.invokeMethod(PublishedServerEventHandlerRpcHandler.java:200)
at com.vaadin.flow.server.communication.rpc.PublishedServerEventHandlerRpcHandler.invokeMethod(PublishedServerEventHandlerRpcHandler.java:146)
at com.vaadin.flow.server.communication.rpc.PublishedServerEventHandlerRpcHandler.handleNode(PublishedServerEventHandlerRpcHandler.java:129)
at com.vaadin.flow.server.communication.rpc.AbstractRpcInvocationHandler.handle(AbstractRpcInvocationHandler.java:80)
at com.vaadin.flow.server.communication.ServerRpcHandler.handleInvocationData(ServerRpcHandler.java:571)
at com.vaadin.flow.server.communication.ServerRpcHandler.lambda$handleInvocations$6(ServerRpcHandler.java:552)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
at com.vaadin.flow.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:552)
at com.vaadin.flow.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:376)
at com.vaadin.flow.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:135)
at com.vaadin.flow.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:63)
at com.vaadin.flow.server.VaadinService.handleRequest(VaadinService.java:1839)
at com.vaadin.flow.server.VaadinServlet.service(VaadinServlet.java:402)
at com.vaadin.flow.spring.SpringServlet.service(SpringServlet.java:106)
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:710)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:128)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:513)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:333)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:262)
at org.springframework.web.servlet.mvc.ServletForwardingController.handleRequestInternal(ServletForwardingController.java:139)
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:177)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:49)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:866)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1003)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:903)
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:649)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:874)
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:710)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:128)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:107)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:107)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:107)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:199)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:107)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:165)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:77)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:113)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:83)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:72)
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:685)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:397)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:903)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1778)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:946)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:480)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:57)
at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.lang.ClassCastException: class com.flowingcode.vaadin.jsonmigration.ElementalObjectNode cannot be cast to class elemental.json.JsonObject (com.flowingcode.vaadin.jsonmigration.ElementalObjectNode and elemental.json.JsonObject are in unnamed module of loader org.springframework.boot.loader.launch.LaunchedClassLoader @568db2f2)
at com.flowingcode.addons.ycalendar.ExtendedDatePicker.fetchStyles(ExtendedDatePicker.java:92)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at com.vaadin.flow.server.communication.rpc.PublishedServerEventHandlerRpcHandler.invokeMethod(PublishedServerEventHandlerRpcHandler.java:222)
... 58 more

Expected behavior

No exception

Minimal reproducible example

https://addonsv25-staging.flowingcode.com/year-month-calendar/date-picker

Add-on Version

4.6.0-SNAPSHOT

Vaadin Version

25.0.0

Additional information

N/A