widgets: avoid setting X11BypassWindowManagerHint in QToolBar
when restoring state
With X11BypassWindowManagerHint, the floating tool bar was created without control from window manager, which causes it stays on top at all virtual desktops.
Pick-to: 6.4 6.3 6.2 5.15 Fixes: QTBUG-105591 Change-Id: I1868f4e75e1b84f9e81c05d2e927a183a0c635ee Reviewed-by: Tor Arne Vestbø tor.arne.vestbo@qt.io Reviewed-by: Qt CI Bot qt_ci_bot@qt-project.org (cherry picked from commit c3c4d4dd)