Fix and reenable org.eclipse.core.internal.expressions.tests.ExpressionTests.testSubTypeTiming #894
Description
Failed once on MacOS: https://github.com/eclipse-platform/eclipse.platform/pull/892/checks?check_run_id=19130535605
cachedDelta: 90, instanceDelta: 73
java.lang.AssertionError: cachedDelta: 90, instanceDelta: 73
at org.junit.Assert.fail(Assert.java:89)
at org.junit.Assert.assertTrue(Assert.java:42)
at org.eclipse.core.internal.expressions.tests.ExpressionTests.testSubTypeTiming(ExpressionTests.java:1135)
Edit: the test has been disabled via #1692, so the actual task here is to fix and reenable the test according to proposals in below comments.