Move SENSORLESS_PROBING to the probes section

Fixes a bug with HAS_BED_PROBE not being set before use.

Marlin/Configuration.h

   #define SMART_EFFECTOR_MOD_PIN  -1  // Connect a GPIO pin to the Smart Effector MOD pin
 #endif
 
+/**
+ * Use StallGuard2 to probe the bed with the nozzle.
+ * Requires stallGuard-capable Trinamic stepper drivers.
+ * CAUTION: This can damage machines with Z lead screws.
+ *          Take extreme care when setting up this feature.
+ */
+//#define SENSORLESS_PROBING
+
 //
 // For Z_PROBE_ALLEN_KEY see the Delta example configurations.
 //

Marlin/Configuration_adv.h

    */
   //#define SENSORLESS_HOMING // StallGuard capable drivers only
 
-  /**
-   * Use StallGuard2 to probe the bed with the nozzle.
-   *
-   * CAUTION: This could cause damage to machines that use a lead screw or threaded rod
-   *          to move the Z axis. Take extreme care when attempting to enable this feature.
-   */
-  //#define SENSORLESS_PROBING // StallGuard capable drivers only
-
   #if EITHER(SENSORLESS_HOMING, SENSORLESS_PROBING)
     // TMC2209: 0...255. TMC2130: -64...63
     #define X_STALL_SENSITIVITY  8