hitl,sitl,sih: use separate actuator_outputs_sim for SYS_CTRL_ALLOC==1

- removes the need to do type-specific rescaling of pwm to normalized values
- allows to run physical output drivers alongside HIL/SIH

src/modules/simulator/simulator.h

@@ -131,9 +131,7 @@ public:
 #endif
 
 private:
-	Simulator() : ModuleParams(nullptr)
-	{
-	}
+	Simulator();
 
 	~Simulator()
 	{
@@ -291,6 +289,7 @@ private:
 	float _last_magx{0.0f};
 	float _last_magy{0.0f};
 	float _last_magz{0.0f};
+	bool _use_dynamic_mixing{false};
 
 #if defined(ENABLE_LOCKSTEP_SCHEDULER)
 	px4::atomic<bool> _has_initialized {false};