start power switch component in undefined mode

src/fsfw/power/PowerSwitcherComponent.h

@@ -42,7 +42,7 @@ class PowerSwitcherComponent : public SystemObject,
  private:
   MessageQueueIF *queue = nullptr;
 
-  Mode_t mode = MODE_OFF;
+  Mode_t mode = MODE_UNDEFINED;
   Submode_t submode = 0;
 
   ModeHelper modeHelper;