Use the hotend idle timer in M25 to turn off hotend after a while#27968

vehystrix wants to merge 2 commits intoMarlinFirmware:bugfix-2.1.xMarlinFirmware/Marlin:bugfix-2.1.xfrom

vehystrix:M25HotendIdlevehystrix/Elegoo-Neptune-marlin:M25HotendIdleCopy head branch name to clipboard