More "zero extruders" changes (#15213)

Marlin/src/feature/power_loss_recovery.cpp

Marlin/src/feature/power_loss_recovery.h

Marlin/src/gcode/config/M221.cpp

Marlin/src/gcode/gcode.cpp

Marlin/src/gcode/gcode.h

Marlin/src/gcode/lcd/M145.cpp

Marlin/src/gcode/temperature/M104_M109.cpp

Marlin/src/inc/Conditionals_adv.h

Marlin/src/inc/Conditionals_post.h

Marlin/src/inc/SanityCheck.h

Marlin/src/lcd/HD44780/ultralcd_HD44780.cpp

Marlin/src/lcd/dogm/dogm_Statusscreen.h

Marlin/src/lcd/dogm/status_screen_DOGM.cpp

Marlin/src/lcd/extensible_ui/lib/dgus/DGUSDisplay.cpp

Marlin/src/lcd/extensible_ui/ui_api.cpp

Marlin/src/lcd/menu/menu.h

Marlin/src/lcd/menu/menu_advanced.cpp

Marlin/src/lcd/menu/menu_motion.cpp

Marlin/src/lcd/menu/menu_temperature.cpp

Marlin/src/lcd/menu/menu_tune.cpp