Edit Sketch no longer shows bodies a later feature deletes (#1329)

Fixes #1167. While a sketch is edited, a body that a rolled-off, unsuppressed Remove deletes is not shown (unless the sketch is built on it); the history stays rolled back, only the view changes. Drawing, picking, screenshots, thumbnails and the browser's Bodies folder agree; document.inspect reports removed_later. Checked on main + this branch: cargo check --workspace, the engine sketch_edit_removed/occurrences tests and the UI viewport/browser tests.

crates/engine/src/cmd/inspect.rs

@@ -245,6 +245,10 @@ fn inspect(s: &mut Session, p: &Value) -> Result<Value> {
             let mut v = if with_measure { measure_json(b) } else { json!({"name": b.name, "feature": b.feature}) };
             if let Some(o) = v.as_object_mut() {
                 o.insert("visible".into(), json!(s.body_visible(&b.name)));
+                if s.body_removed_later(&b.name) {
+                    // Editing a sketch rolls the timeline back; this body is deleted further on.
+                    o.insert("removed_later".into(), json!(true));
+                }
             }
             v
         })