This PR fixes tooltips not showing on `IconButton`s.
The "fix" here is the same hack that we used to fix `on_click` handlers
for `ListItem`s, where we introduce another layer of wrapping with an
element with an ID set.
This PR also adds a story for the `IconButton` so this issue can be
tested/observed in isolation.
Release Notes:
- N/A
Marshall Bowers
ee027bc112