Merge branch 'release'

* release:
  lib/model: Fixes on receive-only test setup and pulling (syncthing#5136)
  lib/fs: Don't add path separators at end of path (fixes syncthing#5144) (syncthing#5146)
  lib/fs: Evaluate root when watching not on fs creation (fixes syncthing#5043) (syncthing#5105)