Tweak G60/G61 slots

Marlin/src/gcode/feature/pause/G60.cpp

   }
 
   stored_position[slot] = current_position;
-  SBI(saved_slots[slot >> 3], slot & 0b00000111);
+  SBI(saved_slots[slot >> 3], slot & 0x07);
 
   #if ENABLED(SAVED_POSITIONS_DEBUG)
     const xyze_pos_t &pos = stored_position[slot];

Marlin/src/gcode/feature/pause/G61.cpp

   #endif
 
   // No saved position? No axes being restored?
-  if (!TEST(saved_slots[slot >> 3], slot & 0b00000111) || !parser.seen("XYZ")) return;
+  if (!TEST(saved_slots[slot >> 3], slot & 0x07) || !parser.seen("XYZ")) return;
 
   // Apply any given feedrate over 0.0
   const float fr = parser.linearval('F');