Show path of default jdk as well in the notification

[yuyully]

Gradle for java: v3.17.0

When default sdk is not compatible with current gradle version, there is a notification as below, the message should also show what default sdk version is detected.

Repro steps:

1. Make sure there is JDK 8 in your local machine and JAVA_HOME is not JDK 8.
2. Don't set gradle import java version in vscode settings
3. Clone and open https://github.com/lenskit/lenskit.git

[jdneo]

@Tanish-Ranjan

Do you remember that the default jdk is the jdk used to launch the gradle server, right?

[Tanish-Ranjan]

@jdneo Yes if the default jdk is compatible, it will be used to launch the BuildServer otherwise we try to find a compatible jdk.

[jdneo]

Ok

Convert the request to 'Show path of default jdk as well in the notification'