Option to use raw digipot values (#17536)

Marlin/src/lcd/extui/ui_api.cpp

@@ -780,7 +780,7 @@ namespace ExtUI {
      */
     int16_t mmToWholeSteps(const float mm, const axis_t axis) {
       const float steps = mm / planner.steps_to_mm[axis];
-      return steps > 0 ? ceil(steps) : floor(steps);
+      return steps > 0 ? CEIL(steps) : FLOOR(steps);
     }
   #endif