Improve the UX of the location bar's connection status
As part of https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/41060, we explored beefing up the styling of the connection status in the location bar – and revealing a tiny `Connect` button when the user navigates away from `about:torconnect`.
Changes include:
- [ ] Adding the new torconnect icon(s)
- [ ] Revealing an extra tiny button after tabbing away from `about:torconnect`
- [ ] Adding an additional `Potentially Blocked` (which should exist in `about:preferences#connection`'s status strip already)
- [ ] Additional styling updates
The Figma file's ready for dev handoff here: [Figma link](https://www.figma.com/file/RS584DcR4emXrw1F8g3l5x/Tor-Browser-12.5?node-id=2%3A14695&t=JdoAW2xcF87Hqnjd-1)
These fixes will be ran through additional usability testing in March/April as part of ~"Sponsor 30" before they reach stable in 12.5.
issue