[2.1.x] 🩹 Fix missing HAS_DUAL_Y_STEPPERS define#27024

thinkyhead merged 1 commit intoMarlinFirmware:2.1.xMarlinFirmware/Marlin:2.1.xfrom

thisiskeithb:pr/add_missing_HAS_DUAL_Y_STEPPERSthisiskeithb/Marlin:pr/add_missing_HAS_DUAL_Y_STEPPERSCopy head branch name to clipboard