feat(next): version view overhaul (#12027)
#11769 improved the lexical version view diff component. This PR
improves the rest of the version view.
## What changed
- Column layout when selecting a version:
- Previously: Selected version on the left, latest version on the left
- Now: Previous version on the left, previous version on the right
(mimics behavior of GitHub)
- Locale selector now displayed in pill selector, rather than
react-select
- Smoother, more reliable locale, modifiedOnly and version selection.
Now uses clean event callbacks rather than useEffects
- React-diff-viewer-continued has been replaced with the html differ we
use in lexical
- Updated Design for all field diffs
- Version columns now have a clearly defined separator line
- Fixed collapsibles showing in version view despite having no modified
fields if modifiedOnly is true
- New, redesigned header
## Screenshots
### Before
### After
4e2e4d2aed