Fix bilinear_line_to_destination definition

See #19431

Marlin/src/feature/bedlevel/abl/abl.cpp

@@ -348,7 +348,7 @@ float bilinear_z_offset(const xy_pos_t &raw) {
    * Prepare a bilinear-leveled linear move on Cartesian,
    * splitting the move where it crosses grid borders.
    */
-  void bilinear_line_to_destination(const feedRate_t scaled_fr_mm_s, uint16_t x_splits, uint16_t y_splits) {
+  void bilinear_line_to_destination(const feedRate_t &scaled_fr_mm_s, uint16_t x_splits, uint16_t y_splits) {
     // Get current and destination cells for this line
     xy_int_t c1 { CELL_INDEX(x, current_position.x), CELL_INDEX(y, current_position.y) },
              c2 { CELL_INDEX(x, destination.x), CELL_INDEX(y, destination.y) };