Fix random TestBridgeCommentNotificationFromRelationToProperty.shouldNotifyEventWhenUpdateComment

java.lang.AssertionError: Event wasn't fired
	at org.nuxeo.ecm.platform.comment.TestBridgeCommentNotificationFromRelationToProperty.lambda$shouldNotifyEventWhenUpdateComment$1(TestBridgeCommentNotificationFromRelationToProperty.java:106)
	at java.base/java.util.Optional.orElseThrow(Optional.java:408)
	at org.nuxeo.ecm.platform.comment.TestBridgeCommentNotificationFromRelationToProperty.shouldNotifyEventWhenUpdateComment(TestBridgeCommentNotificationFromRelationToProperty.java:106)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)

2020-02-14 06:10:25,914 [Nuxeo-Work-default-1:979276664932016.1590198290] ERROR [AbstractWork] Exception during work: FulltextExtractorWork(f8074b1a-d8a1-4a87-a2f3-eb2a5bab3eab, , Progress(0.0%, ?/0), Saving)
java.util.ConcurrentModificationException: null
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:1042) ~[?:?]
	at java.util.ArrayList$Itr.next(ArrayList.java:996) ~[?:?]
	at org.nuxeo.ecm.core.event.impl.EventListenerList.recomputeEnabledListeners(EventListenerList.java:165) ~[nuxeo-core-event-11.1-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.event.impl.EventListenerList.getEnabledInlineListenersDescriptors(EventListenerList.java:174) ~[nuxeo-core-event-11.1-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.event.impl.EventServiceImpl.fireEvent(EventServiceImpl.java:234) ~[nuxeo-core-event-11.1-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.api.AbstractSession.notifyEvent(AbstractSession.java:254) ~[nuxeo-core-11.1-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.api.AbstractSession.save(AbstractSession.java:1483) ~[nuxeo-core-11.1-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.storage.FulltextExtractorWork.work(FulltextExtractorWork.java:147) ~[nuxeo-core-storage-11.1-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.work.AbstractWork.runWorkWithTransaction(AbstractWork.java:484) [nuxeo-core-event-11.1-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.work.AbstractWork.run(AbstractWork.java:374) [nuxeo-core-event-11.1-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.work.WorkHolder.run(WorkHolder.java:57) [nuxeo-core-event-11.1-SNAPSHOT.jar:?]