KCommandBar: improve positioning
This MR is a better way to fix the positioning of the command bar when there is no central widget. Also, this commit improves the positioning of the command bar in applications that use QDockWidget (like Kdenlive).
This MR is a better way to fix the positioning of the command bar when there is no central widget. Also, this commit improves the positioning of the command bar in applications that use QDockWidget (like Kdenlive).