Add set_all_homed

Marlin/src/feature/powerloss.cpp

   #endif
 
   // Pretend that all axes are homed
-  axis_homed = axis_known_position = xyz_bits;
+  set_all_homed();
 
   // Recover volumetric extrusion state
   #if DISABLED(NO_VOLUMETRICS)

Marlin/src/module/motion.h

 FORCE_INLINE bool no_axes_homed() { return !axis_homed; }
 FORCE_INLINE bool all_axes_homed() { return (axis_homed & xyz_bits) == xyz_bits; }
 FORCE_INLINE bool all_axes_known() { return (axis_known_position & xyz_bits) == xyz_bits; }
+FORCE_INLINE void set_all_homed() { axis_homed = axis_known_position = xyz_bits; }
 FORCE_INLINE void set_all_unhomed() { axis_homed = axis_known_position = 0; }
 
 FORCE_INLINE bool homing_needed() {