client: use current modifiers in repeat keys
This amends 35880c7e .
Fixes: QTBUG-123007 Pick-to: 6.7 6.6 6.5 6.2 5.15 Change-Id: I3b4e5d4a8304fd57558eec3897562895c294aadd Reviewed-by: David Edmundson davidedmundson@kde.org (cherry picked from commit 9ae6b38f)