Deprecate window_present_with_time
We don't want to keep this API, it's a legacy from X11. It's not clear timestamp is a token and we don't have the right APIs to found out the event timestamp anymore.
It causes confusion and is being used with either an arbitrary timestamp or Gdk.CURRENT_TIME
cc @ebassi Reference: https://matrix.to/#/!zdrdMLdnhhVKlafMSp:gnome.org/$_jvQiukafBHYEbS1MqoQHifoebMhlpdl3lUqETn1-yY
I think it'd be useful for users to know about this, but if you think it's not the right time – feel free to close.