Fix Core axis babystepping (#18342)

Marlin/src/module/stepper.cpp

@@ -2850,7 +2850,7 @@ void Stepper::report_positions() {
 
         case Y_AXIS:
           #if CORE_IS_XY
-            BABYSTEP_CORE(X, Y, 0, direction, (CORESIGN(1)<0));
+            BABYSTEP_CORE(X, Y, 1, !direction, (CORESIGN(1)>0));
           #elif CORE_IS_YZ
             BABYSTEP_CORE(Y, Z, 0, direction, (CORESIGN(1)<0));
           #else