fix: added includes that are needed in 4.6

modules/wave_survival/health_status.cpp

@@ -1,4 +1,5 @@
 #include "health_status.h"
+#include "core/config/engine.h"
 #include "macros.h"
 
 String HealthStatus::sig_death{ "death" };

modules/wave_survival/player_input.cpp

@@ -1,4 +1,6 @@
 #include "player_input.h"
+#include "core/config/engine.h"
+#include "core/input/input.h"
 #include "scene/main/scene_tree.h"
 
 String PlayerInput::sig_movement_input{ "movement_input" };

modules/wave_survival/state_machine.cpp

@@ -1,4 +1,5 @@
 #include "state_machine.h"
+#include "core/config/engine.h"
 #include "state.h"
 
 void StateMachine::_bind_methods() {}