New shares should be added at the top of the list

[oparoz]

Steps to reproduce

1. Open the sidebar to share a file that has already been shared 20 times
2. Share the file

Expected behaviour

I should see the share I've just created at the top of my list of shares for that file

Actual behaviour

I can't see the new share because it's been added at the bottom of the list and the sidebar only shows me the top 10 (?) shares

[skjnldsv]

Fixed with #15719