🐛 Fix UBL 'G29 J' mesh tilt (MarlinFirmware#25453)

Fix regression from MarlinFirmware#24214

Author: jamespearson04

Marlin/src/feature/bedlevel/ubl/ubl.h

@@ -264,9 +264,9 @@ class unified_bed_leveling {
         return UBL_Z_RAISE_WHEN_OFF_MESH;
     #endif
 
-    const uint8_t mx = _MIN(cx, (GRID_MAX_POINTS_X) - 2) + 1, my = _MIN(cy, (GRID_MAX_POINTS_Y) - 2) + 1,
-                  x0 = get_mesh_x(cx), x1 = get_mesh_x(cx + 1);
-    const float z1 = calc_z0(rx0, x0, z_values[cx][cy], x1, z_values[mx][cy]),
+    const uint8_t mx = _MIN(cx, (GRID_MAX_POINTS_X) - 2) + 1, my = _MIN(cy, (GRID_MAX_POINTS_Y) - 2) + 1;
+    const float x0 = get_mesh_x(cx), x1 = get_mesh_x(cx + 1),
+                z1 = calc_z0(rx0, x0, z_values[cx][cy], x1, z_values[mx][cy]),
                 z2 = calc_z0(rx0, x0, z_values[cx][my], x1, z_values[mx][my]);
     float z0 = calc_z0(ry0, get_mesh_y(cy), z1, get_mesh_y(cy + 1), z2);