T23c round 2 fix

- a trigger opens only its word, so a path keeps its slashes in the query
- suggestions reveal the cursor once the list has its bounds: Popup takes a
  row to reveal, and a canvas inside the list asks for it and one more frame

src/forms/search.rs

@@ -113,6 +113,7 @@ impl RenderOnce for SearchInput {
                         pick,
                         dismiss: None,
                         scroll: None,
+                        reveal: None,
                     }
                     .render(window, cx),
                 )