While one could get back to an ongoing call on #phosh's lockscreen by swiping
to the right it wasn't clear if there was still a call ongoing. This will be
improved by showing a notification on the lockscreen making it hard to miss (and which we can likely also use to switch between calls once the calls app supports it):
1️⃣ /3️⃣
While at that I put notifications and media player widget into the same
scrolled window and have that use more vertical space so things are (hopefully) less clumsy to use.
2️⃣ /3️⃣
call notification MR: https://gitlab.gnome.org/World/Phosh/phosh/-/merge_requests/1281
vertical space MR: https://gitlab.gnome.org/World/Phosh/phosh/-/merge_requests/1280
3️⃣ /3️⃣
