This reverts commit 054ef83fc5.

* Fix poll options not being selectable via keyboard

Fixes #12384

* Improve styling of poll option checkboxes/radio buttons

* Use more appropriate ARIA roles for poll options

* Allow switching between single and multiple choice from keyboard

* Coding style

* Avoid using .bind()

- Disable the “add option” button instead of hiding it
- Allow poll option inputs to scale to full width

* Refactor selectComposeSuggestion so that different paths can be updated

* Add suggestions in CW field

* Add emoji suggestion to poll options

* Attempt to fix CSS

* Hide suggestions by default

They will be enabled if the input has focus

* Add actions and reducers for polls

* Add poll button

* Disable media upload if poll enabled

* Add poll form

* Make delete & redraft work with polls