Jetty 12.0.13 fails to start when the threadpool-all-virtual module is enabled.

[dmitry-tantserov]

Jetty version(s)
12.0.13

Jetty Environment
ee10

Java version/vendor (use: java -version)
openjdk version "21.0.4" 2024-07-16 LTS
OpenJDK Runtime Environment Corretto-21.0.4.7.1 (build 21.0.4+7-LTS)
OpenJDK 64-Bit Server VM Corretto-21.0.4.7.1 (build 21.0.4+7-LTS, mixed mode)

OS type/version
Ubuntu 22.04.4 LTS

Description
This PR has caused Jetty to fail to start when the threadpool-all-virtual module is enabled.

How to reproduce?
Starting Jetty with the threadpool-all-virtual module in the startup arguments causes the following error:

Config error java.lang.IllegalStateException: No suitable constructor:
  <New id="threadPool" class="org.eclipse.jetty.util.thread.VirtualThreadPool">
    <Arg type="int"><Property name="jetty.threadPool.maxThreads" default="200"/></Arg>
    <Set name="name" property="jetty.threadPool.namePrefix"/>
    <Set name="tracking" property="jetty.threadPool.tracking"/>
    <Set name="detailedDump" property="jetty.threadPool.detailedDump"/>
  </New>
on null at
  <New id="threadPool" class="org.eclipse.jetty.util.thread.VirtualThreadPool">
    <Arg type="int"><Property name="jetty.threadPool.maxThreads" default="200"/></Arg>
    <Set name="name" property="jetty.threadPool.namePrefix"/>
    <Set name="tracking" property="jetty.threadPool.tracking"/>
    <Set name="detailedDump" property="jetty.threadPool.detailedDump"/>
  </New>
in file:///opt/jetty/etc/jetty-threadpool-all-virtual.xml

Presumably, this line should be changed to:
<Set name="maxThreads" type="int"><Property name="jetty.threadPool.maxThreads" default="200"/></Set>.