Once server in reload-required state capabilities no longer checked at stage Model.

[standalone@localhost:9990 /] ./core-service=management/management-interface=http-interface:undefine-attribute(name=security-realm)
{
    "outcome" => "success",
    "response-headers" => {
        "operation-requires-reload" => true,
        "process-state" => "reload-required"
    }
}

[standalone@localhost:9990 /] ./core-service=management/management-interface=http-interface:write-attribute(name=security-domain, value=MgMtDom)
{
    "outcome" => "success",
    "response-headers" => {
        "operation-requires-reload" => true,
        "process-state" => "reload-required"
    }
}

11:21:18,567 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([
    ("core-service" => "management"),
    ("management-interface" => "http-interface")
]): java.lang.IllegalStateException: WFLYCTL0364: Capability 'org.wildfly.security.security-domain.MgMtDom' is unknown.
	at org.jboss.as.controller.ModelControllerImpl$CapabilityRegistryImpl.getCapabilityRegistration(ModelControllerImpl.java:1388)