`express.ui.page_opts(title = ...)` is sometimes not visible on the page

For example, the `Foo` here isn't visible on the page (it only gets used for the browser tab's title)

```python
from shiny.express import ui

ui.page_opts(title="Foo")

"Bar"
```

For consistency, `ui.page_opts(title="Foo")` should always generate a visible result