Improve exception message in ManagedSelector

[rushalias]

Jetty version(s)
9.4.42.v20210604

Java version/vendor (use: java -version)
openjdk 11.0.11 2021-04-20 LTS
OpenJDK Runtime Environment Corretto-11.0.11.9.1 (build 11.0.11+9-LTS)
OpenJDK 64-Bit Server VM Corretto-11.0.11.9.1 (build 11.0.11+9-LTS, mixed mode)

OS type/version
In Kubernetes
Ubuntu 20 in userland container
Ubuntu 18 in kernel

Description
The message in the thrown exception is not accurate, there is no timeout involved. The exception is thrown if an attempt is made to use a SocketChannel that is in a pending state.
See: https://github.com/eclipse/jetty.project/blob/jetty-9.4.x/jetty-io/src/main/java/org/eclipse/jetty/io/ManagedSelector.java#L948-L957

        @Override
        public void run()
        {
            if (_selectorManager.isConnectionPending(channel))
            {
                if (LOG.isDebugEnabled())
                    LOG.debug("Channel {} timed out while connecting, closing it", channel);
                failed(new SocketTimeoutException("Connect Timeout"));
            }
        }

How to reproduce?
for reference: https://www.eclipse.org/lists/jetty-users/msg09911.html

[github-actions]

This issue has been automatically marked as stale because it has been a
full year without activity. It will be closed if no further activity occurs.
Thank you for your contributions.

[github-actions]

This issue has been automatically marked as stale because it has been a
full year without activity. It will be closed if no further activity occurs.
Thank you for your contributions.