✨ STATUS_HEAT_POWER (#25268)

Marlin/src/inc/SanityCheck.h

@@ -404,6 +404,10 @@ static_assert(COUNT(arm) == LOGICAL_AXES, "AXIS_RELATIVE_MODES must contain " _L
   #error "CUSTOM_STATUS_SCREEN_IMAGE requires a 128x64 DOGM B/W Graphical LCD."
 #endif
 
+#if ALL(STATUS_HEAT_PERCENT, STATUS_HEAT_POWER)
+  #error "Only enable STATUS_HEAT_PERCENT or STATUS_HEAT_POWER, but not both."
+#endif
+
 /**
  * LCD Lightweight Screen Style
  */