💚 Fix Teensy CI test (#23433)

buildroot/tests/teensy31

 # Zero endstops, as with a CNC
 #
 restore_configs
-opt_set MOTHERBOARD BOARD_TEENSY31_32
+opt_set MOTHERBOARD BOARD_TEENSY31_32 X_HOME_DIR 0 Y_HOME_DIR 0 Z_HOME_DIR 0
 opt_disable USE_XMIN_PLUG USE_YMIN_PLUG USE_ZMIN_PLUG
 exec_test $1 $2 "Teensy3.1 with Zero Endstops" "$3"