Update sync/register interface

[marcellamaki]

Summary

Rather than having a visible but disabled "Register" button for registered facilities, the option to register facilities is now in a kebab menu, with the sync button more prominent. Inversely, for non-registered facilities, the register button is prominent, with the sync button in a kebab menu.

Not already registered

Already registered

References

Fixed #7672

Reviewer guidance

I am not actually sure if this is a sufficient change to account for all of the conditions @jamalex described? Any other considerations I should account for?

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Testing checklist

• Contributor has fully tested the PR manually
• If there are any front-end changes, before/after screenshots are included
• Critical user journeys are covered by Gherkin stories
• Critical and brittle code paths are covered by unit tests

PR process

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Reviewer checklist

• Automated test coverage is satisfactory
• PR is fully functional
• PR has been tested for accessibility regressions
• External dependency files were updated if necessary (yarn and pip)
• Documentation is updated
• Contributor is in AUTHORS.md

[jredrejo]

Tested and working perfectly.
Code looks good to me (I dislike the need to use nextTick to set the focus, it seems a brittle trick but that's a vue flaw, so nothing to do)