Use safe_delay for PSU_POWERUP_DELAY (#18680)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/src/feature/power.cpp

@@ -105,9 +105,9 @@ void Power::power_on() {
   lastPowerOn = millis();
   if (!powersupply_on) {
     PSU_PIN_ON();
-    delay(PSU_POWERUP_DELAY);
+    safe_delay(PSU_POWERUP_DELAY);
     restore_stepper_drivers();
-    TERN_(HAS_TRINAMIC_CONFIG, delay(PSU_POWERUP_DELAY));
+    TERN_(HAS_TRINAMIC_CONFIG, safe_delay(PSU_POWERUP_DELAY));
   }
 }