Fix plugin broadcasts not being filtered

When a plugin broadcasts an event to instances there may be hosts and
instances in the cluster which does not have the plugin loaded.  This
would cause an error to be logged for every instance which does not have
the plugin loaded.

Filter out broadcast events sent to hosts and instances such that
instances and hosts that does not have the event do not received them.

packages/controller/src/BaseConnection.ts

@@ -6,7 +6,6 @@ import type WsServerConnector from "./WsServerConnector";
 
 import * as lib from "@clusterio/lib";
 const { logger } = lib;
-import ControllerRouter from "./ControllerRouter";
 import * as routes from "./routes";
 
 
@@ -24,7 +23,7 @@ export default class BaseConnection extends lib.Link {
 		public _controller: Controller
 	) {
 		super(connector);
-		this.router = new ControllerRouter(this._controller);
+		this.router = _controller.router;
 		for (let [Request, handler] of this._controller._registeredRequests) { this.handle(Request, handler); }
 		for (let [Request, handler] of this._controller._fallbackedRequests) { this.fallbackRequest(Request, handler); }
 		for (let [Event, handler] of this._controller._registeredEvents) { this.handle(Event, handler); }