ExternalJMSDestinationDefinitionLegacyPrefixMessagingDeploymentTestCase Test Failures

After merging the following PR we are seeing some intermittent failures in the test added https://github.com/wildfly/wildfly/pull/14412

e.g.

https://ci.wildfly.org/buildConfiguration/WFPR/289039?showRootCauses=false&expandBuildProblemsSection=true&expandBuildTestsSection=true