Group related homing options (#20283)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/Configuration.h

 
 // @section homing
 
-//#define NO_MOTION_BEFORE_HOMING // Inhibit movement until all axes have been homed
-
+//#define NO_MOTION_BEFORE_HOMING // Inhibit movement until all axes have been homed. Also enable HOME_AFTER_DEACTIVATE for extra safety.
+//#define HOME_AFTER_DEACTIVATE   // Require rehoming after steppers are deactivated. Also enable NO_MOTION_BEFORE_HOMING for extra safety.
 //#define UNKNOWN_Z_NO_RAISE      // Don't raise Z (lower the bed) if Z is "unknown." For beds that fall when Z is powered off.
 
 //#define Z_HOMING_HEIGHT  4      // (mm) Minimal Z height before homing (G28) for Z clearance above the bed, clamps, ...

Marlin/Configuration_adv.h

 // If the Nozzle or Bed falls when the Z stepper is disabled, set its resting position here.
 //#define Z_AFTER_DEACTIVATE Z_HOME_POS
 
-//#define HOME_AFTER_DEACTIVATE  // Require rehoming after steppers are deactivated
-
 // Default Minimum Feedrates for printing and travel moves
 #define DEFAULT_MINIMUMFEEDRATE       0.0     // (mm/s) Minimum feedrate. Set with M205 S.
 #define DEFAULT_MINTRAVELFEEDRATE     0.0     // (mm/s) Minimum travel feedrate. Set with M205 T.