When unregistering the submodel of a resource, if it targets an alias with children the operation will fail like this:
java.lang.IllegalArgumentException: WFLYCTL0277: An alias is already registered at location '/subsystem=infinispan/cache-container=/distributed-cache=/file-store=FILE_STORE': java.lang.IllegalArgumentException: WFLYCTL0277: An alias is already registered at location '/subsystem=infinispan/cache-container=/distributed-cache=/file-store=FILE_STORE'
        at org.jboss.as.controller.registry.AliasResourceRegistration.alreadyRegistered(AliasResourceRegistration.java:291)
        at org.jboss.as.controller.registry.AliasResourceRegistration.unregisterSubModel(AliasResourceRegistration.java:123)
        at org.jboss.as.controller.registry.ConcreteResourceRegistration.unregisterSubModel(ConcreteResourceRegistration.java:261)
        at org.jboss.as.controller.registry.ConcreteResourceRegistration.unregisterSubModel(ConcreteResourceRegistration.java:261)
        at org.jboss.as.controller.registry.ConcreteResourceRegistration.unregisterSubModel(ConcreteResourceRegistration.java:261)
        at org.jboss.as.controller.registry.ConcreteResourceRegistration.unregisterSubModel(ConcreteResourceRegistration.java:261)
        at org.jboss.as.controller.extension.ExtensionRegistry.removeExtension(ExtensionRegistry.java:341)

We should ignore the removal of the children of an alias resource registration.