agent_ui: More agent notifications (#35441)

Release Notes:

- N/A

crates/agent_ui/src/agent_diff.rs

@@ -1521,6 +1521,9 @@ impl AgentDiff {
                     self.update_reviewing_editors(workspace, window, cx);
                 }
             }
+            AcpThreadEvent::Stopped
+            | AcpThreadEvent::ToolAuthorizationRequired
+            | AcpThreadEvent::Error => {}
         }
     }