Guides: Lock Guides keeps guides deselected after Undo, Exit Isolation Mode and Paste

With View > Guides > Lock Guides on, Session::select drops the paths
made into guides from the selection (#1534), but commands that set the
selection another way skipped that filter and left a locked guide
selected, so the next move moved it. object.exitIsolation selected an
isolated guide path. Undo, Redo, a canceled undo group, a canceled
drag or dialog preview and a failed command.batch brought back locked
guide paths and ruler guides in the selection. Unlock All, Show All
and Paste selected the guide paths they unlocked, showed or pasted.
Locking the guides deselected them in the active document only.

The filter is now deselect_guides, which also clears the selected
ruler guides. Session::select and Session::edit run it while Lock
Guides is on, and so do object.exitIsolation, Undo, Redo,
Session::cancel_interaction, a canceled undo group and a failed batch.
Locking the guides deselects them in every open document. With Lock
Guides off, the selection is set as before.

Docs: docs/mcp.md.

crates/engine/src/cmd/object.rs

@@ -1061,11 +1061,16 @@ fn isolate(s: &mut Session, p: &Value) -> Result<Value> {
 }
 
 fn exit_isolation(s: &mut Session, _: &Value) -> Result<Value> {
+    let guides_locked = s.menu.guides_locked;
     let st = s.doc_mut()?;
     if let Some(i) = st.isolation.take() {
         super::distortcmds::finish_edit_text(st, i);
         let target = st.doc.parent_of(i).filter(|p| st.doc.node(*p).is_some_and(|n| n.extras().shaper.is_some())).unwrap_or(i);
         st.selection.set([target]);
+        // A guide path isolated while Lock Guides is on isn't selected (#1534).
+        if guides_locked {
+            crate::deselect_guides(&st.doc, &mut st.selection);
+        }
     }
     st.revision += 1;
     ok()