[MM-40638] Type all of the websocket event names as a new type WebsocketEventType (#25454)

Co-authored-by: Sudheer Tripathi <sudheer@clearglass.com>
Co-authored-by: Sudheer Tripathi <31629433+sudheer121@users.noreply.github.com>
Co-authored-by: Sudheer Tripathi <tripathisudheer604@gmail.com>

server/channels/app/platform/cluster.go

@@ -76,7 +76,7 @@ func (ps *PlatformService) PublishPluginClusterEvent(productID string, ev model.
 }
 
 func (ps *PlatformService) PublishWebSocketEvent(productID string, event string, payload map[string]any, broadcast *model.WebsocketBroadcast) {
-	ev := model.NewWebSocketEvent(fmt.Sprintf("custom_%v_%v", productID, event), "", "", "", nil, "")
+	ev := model.NewWebSocketEvent(model.WebsocketEventType(fmt.Sprintf("custom_%v_%v", productID, event)), "", "", "", nil, "")
 	ev = ev.SetBroadcast(broadcast).SetData(payload)
 	ps.Publish(ev)
 }