Fixes for spindle/laser and SCARA probe bounds

Marlin/Conditionals_post.h

     #define MAX_PROBE_X ( DELTA_PRINTABLE_RADIUS)
     #define MIN_PROBE_Y (-DELTA_PRINTABLE_RADIUS)
     #define MAX_PROBE_Y ( DELTA_PRINTABLE_RADIUS)
+  #elif IS_SCARA
+    #define SCARA_PRINTABLE_RADIUS (SCARA_LINKAGE_1 + SCARA_LINKAGE_2)
+    #define MIN_PROBE_X (-SCARA_PRINTABLE_RADIUS)
+    #define MAX_PROBE_X ( SCARA_PRINTABLE_RADIUS)
+    #define MIN_PROBE_Y (-SCARA_PRINTABLE_RADIUS)
+    #define MAX_PROBE_Y ( SCARA_PRINTABLE_RADIUS)
   #else
     // Boundaries for probing based on set limits
     #define MIN_PROBE_X (max(X_MIN_POS, X_MIN_POS + X_PROBE_OFFSET_FROM_EXTRUDER))

Marlin/pins_RAMPS.h

 //
 // M3/M4/M5 - Spindle/Laser Control
 //
-#if ENABLED(SPINDLE_LASER_ENABLE) && !PIN_EXISTS(SPINDLE_LASER_ENABLE_PIN)
+#if ENABLED(SPINDLE_LASER_ENABLE) && !PIN_EXISTS(SPINDLE_LASER_ENABLE)
   #if !defined(NUM_SERVOS) || NUM_SERVOS == 0 // try to use servo connector first
     #define SPINDLE_LASER_ENABLE_PIN  4  // Pin should have a pullup/pulldown!
     #define SPINDLE_LASER_PWM_PIN     6  // MUST BE HARDWARE PWM