fix(plot): align paper space output

Use the same area pipeline as model space while keeping Layout bound to the physical sheet and printable margins. Share scale, rotation, clipping, and viewport fills across preview, PDF, and printer output.

src/scene/entity.rs

@@ -1420,7 +1420,7 @@ impl Scene {
     /// Recursively collect wipeout masks defined inside a block, transformed to
     /// world space by the accumulated insert transform. See `wipeout_models`.
     #[allow(clippy::too_many_arguments)]
-    fn collect_block_wipeouts(
+    pub(super) fn collect_block_wipeouts(
         &self,
         xform: &acadrust::types::Transform,
         block_name: &str,