Don't let PointerHandler steal mouse grab from keepMouseGrab layer

As explained in the comment, the handler can override the keepMouseGrab
"veto" if the item is a parent (like a Flickable) that filters events,
but not in other cases.  The logic was wrong though, apparently.
Amends 090f404cf80da35734f712b02cc1543acecd5b62

Fixes: QTBUG-78258
Task-number: QTBUG-79163
Change-Id: I9a473ab3b23743f863cb0be13767fdbc29cd5e1c
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
(cherry picked from commit b09ce7dcd8ecf24ef23da8197a64e3fced3fc894)

0 files changed, 0 insertions, 0 deletions