Logging config error

Issue raised at https://github.com/jetty/jetty.project/issues/6112

For Jetty 12 to deploy the XWiki WAR, we need to update the jetty-web.xml file at https://github.com/xwiki/xwiki-platform/blob/XWIKI-21211/xwiki-platform-core/xwiki-platform-web/xwiki-platform-web-war/src/main/webapp/WEB-INF/jetty-web.xml to use <Configure class="org.eclipse.jetty.ee8.webapp.WebAppContext">. We need to find a way so that we can deploy XWiki in both Jetty 10 and Jetty 12.

Issue raised at https://github.com/jetty/jetty.project/issues/11266