Fix compile error with EXTRUDER>1 (#13651)

Marlin/src/inc/Conditionals_LCD.h

@@ -425,7 +425,7 @@
  */
 #if ENABLED(DISTINCT_E_FACTORS) && E_STEPPERS > 1
   #define XYZE_N (XYZ + E_STEPPERS)
-  #define E_AXIS_N(E) (E_AXIS + E)
+  #define E_AXIS_N(E) AxisEnum(E_AXIS + E)
 #else
   #undef DISTINCT_E_FACTORS
   #define XYZE_N XYZE