[GSS](7.2.z) WFLY-12083 - Deployment failure if an explicit bean archive contain a Pojo with @NotNull annotation

ERROR [org.jboss.msc.service.fail] (MSC service thread 1-5) MSC000001: Failed to start service jboss.deployment.unit."playground-jar.jar".WeldStartService: org.jboss.msc.service.StartException in service jboss.deployment.unit."playground-jar.jar".WeldStartService: Failed to start service
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1730)
	at org.jboss.msc.service.ServiceControllerImpl$ControllerTask.run(ServiceControllerImpl.java:1558)
	at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
	at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.jboss.weld.exceptions.DeploymentException: WELD-001436: Type org.jboss.playground.PlaygroundToStringUtil is not proxyable because it has a private constructor [EnhancedAnnotatedConstructorImpl] private org.jboss.playground.PlaygroundToStringUtil() - class org.jboss.playground.PlaygroundToStringUtil.
	at org.jboss.weld.injection.producer.InterceptionModelInitializer.init(InterceptionModelInitializer.java:117)
	at org.jboss.weld.injection.producer.BeanInjectionTarget.buildInterceptionModel(BeanInjectionTarget.java:94)
	at org.jboss.weld.injection.producer.BeanInjectionTarget.initializeInterceptionModel(BeanInjectionTarget.java:89)
	at org.jboss.weld.injection.producer.BeanInjectionTarget.initializeAfterBeanDiscovery(BeanInjectionTarget.java:99)
	at org.jboss.weld.injection.producer.InjectionTargetInitializationContext.initialize(InjectionTargetInitializationContext.java:42)
	at org.jboss.weld.injection.producer.InjectionTargetService.initialize(InjectionTargetService.java:63)
	at org.jboss.weld.bootstrap.WeldStartup.deployBeans(WeldStartup.java:481)
	at org.jboss.weld.bootstrap.WeldBootstrap.deployBeans(WeldBootstrap.java:86)
	at org.jboss.as.weld.WeldStartService.start(WeldStartService.java:97)
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1738)
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1700)
	... 6 more