Simplify `radarFault` handling (#35891)

* Revert "Fix up `radarFault` handling (#35880)"

This reverts commit 4d01b7bec8.

* Reapply "Fix up `radarFault` handling (#35880)"

This reverts commit 597d7ec1ed.

* can do this

* yeah this is fine

selfdrive/selfdrived/selfdrived.py

@@ -316,7 +316,7 @@ class SelfdriveD:
       self.events.add(EventName.canError)
     elif self.sm['radarState'].radarErrors.radarUnavailableTemporary:
       self.events.add(EventName.radarTempUnavailable)
-    elif any(getattr(self.sm['radarState'].radarErrors, f) for f in self.sm['radarState'].radarErrors.schema.fields):
+    elif any(self.sm['radarState'].radarErrors.to_dict().values()):
       self.events.add(EventName.radarFault)
     if not self.sm.valid['pandaStates']:
       self.events.add(EventName.usbError)