RFR: 8343902: javax/swing/plaf/nimbus/8041642/bug8041642.java fails in ubuntu22.04

[Prasanta Sadhukhan]

test/jdk/javax/swing/plaf/nimbus/8041642/bug8041642.java fails in ubuntu 22.04 OCI with

----------System.out:(1/30)----------
java.awt.Color[r=49,g=0,b=33]
----------System.err:(11/647)----------
java.lang.RuntimeException: Bar padding color should be green
at bug8041642.main(bug8041642.java:64)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:573)
at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
at java.base/java.lang.Thread.run(Thread.java:1576) 

and the color obtained seems to suggest that the frame is not visible when the test condition was checked, since the color seems to be dark brown which seems to be the desktop barkground in ubuntu, I have updated the test to have more delay of 1sec which is what we used for headful test after creating GUI and subsequent run works fine in my testing...

-------------

Commit messages:
 - Fix test

Changes: https://git.openjdk.org/jdk/pull/22002/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22002&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8343902
  Stats: 13 lines in 1 file changed: 7 ins; 1 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/22002.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22002/head:pull/22002

PR: https://git.openjdk.org/jdk/pull/22002