test(web): include context injection in search golden

apps/web/tests/snapshots/web-search-round/ui.expected.md

@@ -11,6 +11,10 @@
   - img
 - button "Edit":
   - img
+- button "Context injection":
+  - img
+  - img
+  - text: Context injection
 - img
 - text: Search DeepSeek Harness snapshot search
 - list: