in bootstrap 5.x the toggle attribute changed from `data-toggle` to
`data-bs-toggle`, so we have to change `data("toggle")` by
`data("bs-toggle")`
https://getbootstrap.com/docs/4.6/components/collapse/
https://getbootstrap.com/docs/5.1/components/collapse/
https://getbootstrap.com/docs/5.1/migration/#javascript
Also using `$el[0].dataset.bsToggle` instead of `$el.data("toggle")` is
better since `data()` can be confusing
```js
const a = document.createElement("a");
> <a></a>
a.setAttribute("data-bs-toggle", "dropdown")
> <a data-bs-toggle="dropdown"></a>
a.dataset
> DOMStringMap {bsToggle: 'dropdown'}
$(a).data()
> {}
```
*/
https://pad.odoo.com/p/wowl_views
[aju] https://watch.screencastify.com/v/XuuQTkKRFX3lJh1vnvt9 project.task
kanban view > schedule an activity > mark it as done > traceback
https://pastebin.com/i96Krxrb
closes odoo/odoo#98339
Enterprise: https://github.com/odoo/enterprise/pull/30558
Signed-off-by: Adrien Dieudonné (adr) <adr@odoo.com>