Fix and improve software endstops (#13386)

Marlin/src/feature/I2CPositionEncoder.cpp

Marlin/src/gcode/bedlevel/abl/G29.cpp

Marlin/src/gcode/bedlevel/mbl/G29.cpp

Marlin/src/gcode/control/M211.cpp

Marlin/src/gcode/feature/camera/M240.cpp

Marlin/src/gcode/motion/G2_G3.cpp

Marlin/src/inc/SanityCheck.h

Marlin/src/lcd/extensible_ui/ui_api.cpp

Marlin/src/lcd/menu/menu_motion.cpp

Marlin/src/module/motion.cpp

Marlin/src/module/motion.h

Marlin/src/module/planner_bezier.cpp

Marlin/src/module/tool_change.cpp