Write a regression test for CCC4400728

Write a regression test for JDK-4400728
Issue:
JFileChooser constructors by default set current directory to the "Desktop" value on Windows,
but should use user.home property instead.

javadoc says:
"public JFileChooser()
Constructs a JFileChooser pointing to the user's default directory. This default depends on the operating system. It is typically the 'My Documents' folder on Windows, and the user's home directory on Unix.
"
See this https://docs.oracle.com/en/java/javase/17/docs/api/java.desktop/javax/swing/JFileChooser.html#%3Cinit%3E()

Testing:
1. Tested using Mach5(20 times per platform) in macos,linux and windows and got all pass.
2. Tested in original failed Java version and the fixed version;
Java 1.4.0 -> Test Failed.
$ j2sdk1.4.0/bin/java JFileChooserDefaultDirectoryTest
java.lang.NullPointerException
        at java.io.File.<init>(File.java:180)
        at sun.awt.shell.Win32ShellFolder.listFiles(Win32ShellFolder.java:517)
        at sun.awt.shell.Win32ShellFolderManager.get(Win32ShellFolderManager.java:152)
        at sun.awt.shell.ShellFolder.get(ShellFolder.java:208)
        at javax.swing.plaf.metal.MetalFileChooserUI.installComponents(MetalFileChooserUI.java:310)
        at javax.swing.plaf.basic.BasicFileChooserUI.installUI(BasicFileChooserUI.java:130)
        at javax.swing.plaf.metal.MetalFileChooserUI.installUI(MetalFileChooserUI.java:152)
        at javax.swing.JComponent.setUI(JComponent.java:445)
        at javax.swing.JFileChooser.updateUI(JFileChooser.java:1701)
        at javax.swing.JFileChooser.setup(JFileChooser.java:345)
        at javax.swing.JFileChooser.<init>(JFileChooser.java:320)
        at javax.swing.JFileChooser.<init>(JFileChooser.java:273)
        at JFileChooserDefaultDirectoryTest.main(JFileChooserDefaultDirectoryTest.java:15)
Exception in thread "main"

Java 1.5.0 -> Test Passed.
$ jdk1.5.0/bin/java JFileChooserDefaultDirectoryTest
UserHome dir = C:\Users\jpgansible
Test Passed

Java 1.8.0 -> Test Passed.
$ jdk1.8.0_331/bin/java JFileChooserDefaultDirectoryTest
UserHome dir = C:\Users\jpgansible
Test Passed