Changelog

• #11851 - jetty-ee8-websocket-javax-server export not honoured
• #11811 - getHeaderNames should return header name once also when request has it in different case
• #11800 - client: Allow AsyncContentListener.onContent to throw checked Exceptions
• #11792 - StdErrAppender should detect exception circular references
• #11776 - NPE from org.eclipse.jetty.ee8.nested.Request.getRequestURL
• #11767 - Backward compat API WebAppContext.getServerClassMatcher() is not updating the WebAppClassloader
• #11766 - Ensure ReadListener is nulled out when AsyncContext is completed.
• #11763 - Race condition in QoSHandler
• #11760 - request.getHttpURI().getScheme() is null on FORWARD dispatched request, causing NPE
• #11756 - ChunkAccumulator not working with empty chunks
• #11748 - Unexpected HTTP Response Status Code: 404 Not Found
• #11745 - Issue while adding Module for Persistent HTTP Sessions: Google Cloud DataStore
• #11736 - Issue with Response OutputStream#close() rethrowing same EofException instance
• #11507 - org.eclipse.jetty.util.Attributes.getAttribute() should specify return type if no match is found
• #11501 - Introduce experiment fully virtual VirtualThreadPool
• #11072 - Introduce StateTrackingHandler
• #9778 - Remove WriteFlusher.Listener
• #9177 - Add JVM info and OS info to Dumpable.dump()