fix(layout): complete paperspace integration

Apply each layout's embedded page setup and plot style consistently across display, PDF, printing, and multi-layout output.\n\nRefs #844

src/app/commands/blocks.rs

@@ -30,6 +30,7 @@ impl OpenCADStudio {
                                 .document
                                 .header
                                 .paper_space_insertion_base = pt;
+                            self.tabs[i].scene.persist_current_layout_state();
                         } else {
                             self.tabs[i]
                                 .scene