Init bed_level_virt_interpolate on EEPROM load

Marlin/Marlin_main.cpp

@@ -2615,6 +2615,8 @@ static void clean_up_after_endstop_or_probe_move() {
     }
 
     void bed_level_virt_interpolate() {
+      bilinear_grid_spacing_virt[X_AXIS] = bilinear_grid_spacing[X_AXIS] / (BILINEAR_SUBDIVISIONS);
+      bilinear_grid_spacing_virt[Y_AXIS] = bilinear_grid_spacing[Y_AXIS] / (BILINEAR_SUBDIVISIONS);
       for (uint8_t y = 0; y < GRID_MAX_POINTS_Y; y++)
         for (uint8_t x = 0; x < GRID_MAX_POINTS_X; x++)
           for (uint8_t ty = 0; ty < BILINEAR_SUBDIVISIONS; ty++)
@@ -4268,11 +4270,6 @@ inline void gcode_G28() {
           bilinear_start[X_AXIS] = RAW_X_POSITION(left_probe_bed_position);
           bilinear_start[Y_AXIS] = RAW_Y_POSITION(front_probe_bed_position);
 
-          #if ENABLED(ABL_BILINEAR_SUBDIVISION)
-            bilinear_grid_spacing_virt[X_AXIS] = xGridSpacing / (BILINEAR_SUBDIVISIONS);
-            bilinear_grid_spacing_virt[Y_AXIS] = yGridSpacing / (BILINEAR_SUBDIVISIONS);
-          #endif
-
           // Can't re-enable (on error) until the new grid is written
           abl_should_enable = false;
         }