8042381: Test javax/swing/JRootPane/4670486/bug4670486.java fails with Action has not been received

Backport-of: 1b71621008a62a4f806e2e97579fb8716be290a5

Author: GoeLin

test/jdk/ProblemList.txt

@@ -713,7 +713,6 @@ javax/swing/JInternalFrame/Test6325652.java 8224977 macosx-all
 javax/swing/JPopupMenu/4870644/bug4870644.java 8194130 macosx-all,linux-all
 javax/swing/dnd/8139050/NativeErrorsInTableDnD.java 8202765  macosx-all,linux-all
 javax/swing/JEditorPane/6917744/bug6917744.java 8213124 macosx-all
-javax/swing/JRootPane/4670486/bug4670486.java 8042381 macosx-all
 javax/swing/JButton/8151303/PressedIconTest.java 8266246 macosx-aarch64
 java/awt/Robot/HiDPIScreenCapture/ScreenCaptureGtkTest.java 8282270 linux-all
 java/awt/Robot/HiDPIScreenCapture/HiDPIRobotScreenCaptureTest.java 8282270 windows-all

test/jdk/javax/swing/JRootPane/4670486/bug4670486.java

@@ -104,7 +104,7 @@ public static void checkAction() {
     public static void main(String[] args) throws Throwable {
         try {
             Robot robot = new Robot();
-            robot.setAutoDelay(250);
+            robot.setAutoDelay(100);
 
             UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
 
@@ -116,12 +116,14 @@ public void run() {
                     frame.setContentPane(createPanel(frame));
                     frame.setJMenuBar(createMenuBar());
                     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+                    frame.setLocationRelativeTo(null);
                     frame.pack();
                     frame.setVisible(true);
                 }
             });
 
             robot.waitForIdle();
+            robot.delay(1000);
 
             // Change the default button to
             // force a call to BasicRootPaneUI.updateDefaultButtonBindings()