fix(tests): Read UserInput.text in chat module test app (#2327)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: cpsievert

pyproject.toml

@@ -93,6 +93,7 @@ test = [
     "timezonefinder ; platform_system != 'Windows'",
     "ipyleaflet",
     "shinywidgets",
+    "shinychat>=0.6.0",
     "seaborn",
     "plotnine",
     "plotly",

tests/playwright/shiny/components/chat/module/app.py

@@ -15,7 +15,8 @@ def chat_mod_server(input: Inputs, output: Outputs, session: Session):
     @chat.on_user_submit
     async def _():
         user = chat.user_input()
-        await chat.append_message(f"You said: {user}")
+        assert user is not None
+        await chat.append_message(f"You said: {user.text}")
 
 
 app_ui = ui.page_fillable(