add missing fields to WebSearchAction and update app-server types (#10276)

- add `WebSearchAction` to app-server v2 types
- add `queries` to `WebSearchAction::Search` type

Updated tests.

codex-rs/core/tests/suite/items.rs

@@ -255,6 +255,7 @@ async fn web_search_item_is_emitted() -> anyhow::Result<()> {
         completed.action,
         WebSearchAction::Search {
             query: Some("weather seattle".to_string()),
+            queries: None,
         }
     );