java/awt/Modal/OnTop/OnTopAppModal6Test.java fails intermittently in macosx-aarch64 in CI.
Seems to be a test stability issue as the test passes on reruns.

Log:
----------System.out:(0/0)----------
----------System.err:(19/1329)----------
java.lang.RuntimeException: Clicking the dialog Close button did not trigger an action. : expected false to equal true
at jdk.test.lib.Asserts.fail(Asserts.java:720)
at jdk.test.lib.Asserts.assertEquals(Asserts.java:211)
at jdk.test.lib.Asserts.assertEQ(Asserts.java:184)
at TestDialog.clickCloseButton(TestDialog.java:247)
at TestDialog.clickCloseButton(TestDialog.java:234)
at OnTopDDFTest.doTest(OnTopDDFTest.java:142)
at OnTopAppModal6Test.main(OnTopAppModal6Test.java:46)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
at java.base/java.lang.Thread.run(Thread.java:842)

JavaTest Message: Test threw exception: java.lang.RuntimeException: Clicking the dialog Close button did not trigger an action. : expected false to equal true
JavaTest Message: shutting down test