[Location Share] - Expanded map state when no more live location shares

[mnaturel]

Your use case

What would you like to do?

When I am in the expanded map view and all user’s live-shares have ended:

• The pin disappears but the map remains at the position and zoom level that I had it
• I can still interact with the map.
• The share icon at the top-right is removed
• The bottom tray shows a greyed-out share icon and ‘live location ended’.
• This is only available if I am in the expanded map-view at the moment that the share ends. I cannot re-enter this view by clicking on the tile for a stopped live-share.

Why would you like to do it?

To improve UX.

How would you like to achieve it?

See https://www.figma.com/file/uthEK6xuo9hSQRdWvPAre5/Location-Sharing?node-id=402%3A50710

Have you considered any alternatives?

No response

Additional context

No response

Are you willing to provide a PR?

Yes