Tamper protected endpoint-security should be able to continue operating normally when it rejects an attempt uninstall

[cmacknz]

• Relates Cannot successfully change output type or name in tamper protected agent polices that contain Elastic Defend #11266

When Elastic Agent attempts to stop endpoint-security (which is not always the correct thing to do - see #11266), it will tear down the connection information server and ignore errors from the stop call which invokes endpoint-security uninstall.

elastic-agent/pkg/component/runtime/service.go

Lines 169 to 174 in 271901e

	// Stop connection info
	s.log.Debugf("stop connection info for %s service", s.name())
	cisStop()
	// Stop service
	s.stop(ctx, comm, lastCheckin, am == actionTeardown)

This does not consider that endpoint-security uninstall may return exit code 28/284 indicating it is refusing uninstall because it is tamper protected.

When endpoint refuses uninstall, we should leave the system in a state where endpoint can continue to communicate with agent.

[elasticmachine]

Pinging @elastic/elastic-agent-control-plane (Team:Elastic-Agent-Control-Plane)