[gjs] Non-fast-forward update to branch wip/carlosg/setter-methods-on-construct-only

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/carlosg/setter-methods-on-construct-only' was changed in a way that was not a fast-forward 
update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  feccb12... GObject: Ensure to call setter methods for construct-only p

Commits added to the branch:

  0155f3e... GObject: Ensure to call setter methods for construct-only p