boardd/safety_setter_thread: use check_all_connected (#24102)

old-commit-hash: 333257badf

selfdrive/boardd/boardd.cc

@@ -140,11 +140,9 @@ bool safety_setter_thread(std::vector<Panda *> pandas) {
   std::string params;
   LOGW("waiting for params to set safety model");
   while (true) {
-    for (const auto& panda : pandas) {
-      if (do_exit || !panda->connected || !ignition) {
+    if (do_exit || !check_all_connected(pandas) || !ignition) {
       return false;
     }
-    }
 
     if (p.getBool("ControlsReady")) {
       params = p.get("CarParams");