AntUITests.testAntHome failed in CI job

See: https://github.com/eclipse-platform/eclipse.platform/actions/runs/24289285701/job/70923837227?pr=2494

```
org.eclipse.ant.tests.ui.testplugin.AntUITests.testAntHome -- Time elapsed: 20.78 s <<< FAILURE!
org.opentest4j.AssertionFailedError: Console is not closed ==> expected: but was:
at org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:151)
at org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132)
at org.junit.jupiter.api.AssertTrue.failNotTrue(AssertTrue.java:63)
at org.junit.jupiter.api.AssertTrue.assertTrue(AssertTrue.java:36)
at org.junit.jupiter.api.Assertions.assertTrue(Assertions.java:214)
at org.eclipse.ant.tests.ui.testplugin.AntUITestUtil.launchAndWait(AntUITestUtil.java:108)
at org.eclipse.ant.tests.ui.testplugin.AntUITestUtil.launchAndTerminate(AntUITestUtil.java:119)
at org.eclipse.ant.tests.ui.testplugin.AntUITestUtil.launch(AntUITestUtil.java:243)
at org.eclipse.ant.tests.ui.separateVM.SeparateVMTests.testAntHome(SeparateVMTests.java:290)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at org.eclipse.ant.tests.ui.testplugin.TestAgainExtension.lambda$0(TestAgainExtension.java:37)
at java.base/java.util.Optional.ifPresent(Optional.java:178)
at org.eclipse.ant.tests.ui.testplugin.TestAgainExtension.handleTestExecutionException(TestAgainExtension.java:34)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
```

On the next run there was no fail.