Be more specific about the built-in widgets we want to avoid wrapping
To avoid wrapping the built-in widgets (e.g. `autosuggest-fetch`,
`autosuggest-toggle`), we were ignoring all widgets whose names start
with `autosuggest-`. This had the downside of preventing wrapping of
user-defined widgets whose names happened to also start with that
prefix.
By being more specific about the exact built-in widgets we want to avoid
wrapping, we can allow users to define widgets whose names start with
`autosuggest-`.
See GitHub issue #496.