Environment CookieConfig details not visible in Server Dump or JMX

[joakime]

Jetty version(s)
12.0.13

Enhancement Description

The configured CookieConfig for an environment is not visible in dump or jmx.

When using jetty.server.dumpAfterStart=true to see the WebAppContext details for a Cookie Config, the output is simply ...

|        += oeje8w.WebAppContext@63eef88a{EE8 Demo Jetty WebApp,/ee8-test,file:///home/joakim/code/jetty/distros/bases/ee8-samesite-strict/webapps/ee8-demo-jetty/,true}{/home/joakim/code/jetty/distros/bases/ee8-samesite-strict/webapps/ee8-demo-jetty} - STARTED
|        |  +~ oeje8n.ContextHandler$CoreContextHandler@47dbb1e2{EE8 Demo Jetty WebApp,/ee8-test,b=file:///home/joakim/code/jetty/distros/bases/ee8-samesite-strict/webapps/ee8-demo-jetty/,a=AVAILABLE,h=GzipHandler@74cadd41{STARTED,min=2048,inflate=-1}} - STARTED
|        |  += oeje8n.SessionHandler@649725e3{STARTED} - STARTED
|        |  |  += oeje8n.SessionHandler$CoreSessionManager@3c0fae6c{STARTED} - STARTED
|        |  |  |  += org.eclipse.jetty.session.DefaultSessionCache@4c168660[evict=-1,removeUnloadable=false,saveOnCreate=false,saveOnInactiveEvict=false] - STARTED
|        |  |  |  |  += org.eclipse.jetty.session.NullSessionDataStore@52b56a3e[passivating=false,graceSec=3600] - STARTED
|        |  |  |  +~ oejs.DefaultSessionIdManager@3faf2e7d{STARTED}[worker=node0] - STARTED
|        |  |  |  +- ju.ImmutableCollections$ListN@1(size=0)
|        |  |  +- org.eclipse.jetty.ee8.nested.SessionHandler$CookieConfig@fd0e5b6
|        |  |  +- juc.CopyOnWriteArrayList@4eed470d(size=1)

Which shows no details about the configuration.
We should at least add a CookieConfig.toString() to make that entry useful.

The JMX level information for CookieConfig is also missing.