fix(point): preserve relative marker sizing

Keep rendering, picking, block transforms, and plotted output on the
same viewport-relative PDSIZE geometry without overloading wire width
fields.

src/modules/annotate/angular_dim.rs

@@ -161,6 +161,7 @@ fn v3(pt: DVec3) -> Vector3 {
 
 fn preview_wire(points: Vec<Vec3>) -> WireModel {
     WireModel {
+        point_marker: None,
         taper_widths: Vec::new(),
         world_width: 0.0,
         depth_override: None,