We're going to add a ClutterLayoutManager responsible for allocating the
WindowClones. Since layout managers should only set the allocation of
actors, not the translation or scale, we need to position the
WindowClones using their x, y, width and height properties.
The first step for this is to revert this commit, which switched from
setting fixed positions on WindowClones to using the translation
properties.
This reverts commit 8929c89d1fbbdd7b150b3d46b485b2db732cfb00.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1294
25985868e8