8328328: Convert javax/swing/JTabbedPane/4666224/bug4666224.java applet test to main

Backport-of: 65d9f119c401c26c9a6436f5c9a513f91bb8c753

Author: GoeLin

test/jdk/ProblemList.txt

@@ -803,7 +803,7 @@ jdk/jfr/api/consumer/recordingstream/TestOnEvent.java           8255404 linux-x6
 
 javax/swing/JFileChooser/6698013/bug6698013.java 8024419 macosx-all
 javax/swing/JColorChooser/8065098/bug8065098.java 8065647 macosx-all
-javax/swing/JTabbedPane/4666224/bug4666224.html 8144124  macosx-all
+javax/swing/JTabbedPane/4666224/bug4666224.java 8144124  macosx-all
 javax/swing/SwingUtilities/TestTextPosInPrint.java 8227025 windows-all
 
 java/awt/event/MouseEvent/SpuriousExitEnter/SpuriousExitEnter_1.java 7131438,8022539 generic-all