use unique id for post/reply view

Signed-off-by: William Casarin <jb55@jb55.com>

src/app.rs

@@ -925,13 +925,17 @@ fn render_nav(routes: Vec<Route>, timeline_ind: usize, app: &mut Damus, ui: &mut
                         return;
                     };
 
+                    let note_key = note.key().unwrap();
+
                     let poster = app
                         .account_manager
                         .get_selected_account_index()
                         .unwrap_or(0);
 
                     let replying_to = note.pubkey();
-                    ui::PostView::new(&mut app, poster, replying_to).ui(&txn, ui);
+                    ui::PostView::new(&mut app, poster, replying_to)
+                        .id_source(("post", timeline_ind, note_key))
+                        .ui(&txn, ui);
                 }
             });