🐛 Fix conditional M81 suicide (#23549)

Marlin/src/feature/power.cpp

@@ -24,7 +24,9 @@
  * power.cpp - power control
  */
 
-#include "../inc/MarlinConfig.h"
+#include "../inc/MarlinConfigPre.h"
+
+#if EITHER(PSU_CONTROL, AUTO_POWER_CONTROL)
 
 #include "power.h"
 #include "../module/planner.h"
@@ -40,8 +42,6 @@
   #include "../gcode/gcode.h"
 #endif
 
-#if EITHER(PSU_CONTROL, AUTO_POWER_CONTROL)
-
 Power powerManager;
 bool Power::psu_on;
 
@@ -97,6 +97,10 @@ void Power::power_on() {
  * Processes any PSU_POWEROFF_GCODE and makes a PS_OFF_SOUND if enabled.
  */
 void Power::power_off() {
+  SERIAL_ECHOLNPGM(STR_POWEROFF);
+
+  TERN_(HAS_SUICIDE, suicide());
+
   if (!psu_on) return;
 
   #ifdef PSU_POWEROFF_GCODE