Fix RecentFilesCtrl display on macOS 11
Fix RecentFilesCtrl display on macOS 11

Disable automaticallyAdjustsContentInsets, otherwise there would be extra space
above it in WelcomeWindow where the (hidden) toolbar would be.

alexhenrie/poedit,PKRoma/poedit,PKRoma/poedit,vslavik/poedit,nawawi/poedit,vslavik/poedit,alexhenrie/poedit,vslavik/poedit,alexhenrie/poedit,vslavik/poedit,nawawi/poedit,nawawi/poedit,PKRoma/poedit,nawawi/poedit,alexhenrie/poedit,nawawi/poedit,PKRoma/poedit,vslavik/poedit,PKRoma/poedit,alexhenrie/poedit