🔧 Sanity check Z_CLEARANCE_FOR_HOMING (MarlinFirmware#26721)

Author: DerAndere1

Marlin/src/inc/SanityCheck.h

@@ -1725,6 +1725,13 @@ static_assert(NUM_SERVOS <= NUM_SERVO_PLUGS, "NUM_SERVOS (or some servo index) i
   static_assert(WITHIN(Z_SAFE_HOMING_Y_POINT, Y_MIN_POS, Y_MAX_POS), "Z_SAFE_HOMING_Y_POINT can't be reached by the nozzle.");
 #endif
 
+/**
+ * Make sure Z_CLEARANCE_FOR_HOMING is below Z_MAX_POS
+ */
+#if HAS_Z_AXIS
+  static_assert(Z_CLEARANCE_FOR_HOMING <= Z_MAX_POS, "Z_CLEARANCE_FOR_HOMING must be smaller than or equal to Z_MAX_POS.");
+#endif
+
 // Check Safe Bed Leveling settings
 #if HAS_SAFE_BED_LEVELING
   #if defined(SAFE_BED_LEVELING_START_Y) && !defined(SAFE_BED_LEVELING_START_X)