[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/team_test.go

@@ -1633,7 +1633,7 @@ func TestTeamSendEvents(t *testing.T) {
 
 	testCluster.ClearMessages()
 
-	wsEvents := []string{model.WebsocketEventUpdateTeam, model.WebsocketEventRestoreTeam, model.WebsocketEventDeleteTeam}
+	wsEvents := []model.WebsocketEventType{model.WebsocketEventUpdateTeam, model.WebsocketEventRestoreTeam, model.WebsocketEventDeleteTeam}
 	for _, wsEvent := range wsEvents {
 		appErr := th.App.sendTeamEvent(team, wsEvent)
 		require.Nil(t, appErr)