## Description
- Add "Playing in Picture-in-Picture" translations to zh-TW.json
- Deduplicate object keys in zh-TW.json
- Update translations-needed.md
- Auto-generated - The np.json section removed from
translations-needed.md was a duplicate.
## Specific Changes proposed
- Add missing translation for "Playing in Picture-in-Picture" to zh-TW
locale.
- Remove duplicate keys 'Picture-in-Picture' and 'Exit
Picture-in-Picture' from zh-TW.json to eliminate redundancy.
## Requirements Checklist
- [ ] Feature implemented / Bug fixed
- [ ] If necessary, more likely in a feature request than a bug fix
- [x] Change has been verified in an actual browser (Chrome, Firefox,
IE)
- [x] Docs/guides updated
- [x] Has no DOM changes which impact accessiblilty or trigger warnings
(e.g. Chrome issues tab)
- [x] Has no changes to JSDoc which cause `npm run docs:api` to error
- [ ] Example created ([starter template on
JSBin](https://codepen.io/gkatsev/pen/GwZegv?editors=1000#0))
- [ ] Reviewed by Two Core Contributors
---------
Co-authored-by: Harisha Rajam Swaminathan <35213866+harisha-swaminathan@users.noreply.github.com>
Fixed weird translation of strings related to "seek to live" and 'font', and weird usage of terms 'video' and 'audio'. Some refinement is made to improve existing translation as well.
Restore hidden label text for screen readers that describes what the button control does.
Renames the Duration Time language item to Duration.
Deprecate controlText_ property.
Fix a typo in translations-needed.md.
Add a space in the hidden label for live-display, so that it doesn't run together with the visible "LIVE" indication.
Fixes#5135
