container: Don't randomly call gtk_widget_set_allocation()
container: Don't randomly call gtk_widget_set_allocation()

gtk_widget_size_allocate() does that already.

grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita