Revert "Qt xcb: remove false detects of Qt::GroupSwitchModifier"
This reverts commit 25a7034d . The change makes the 5th modifier key broken, which is more serious than Backspace key doesn't work in CapsLock on. And we don't have a better solution for both of them now, perhaps it's better to keep the old behavior in 6.2 LTS. Task-number: QTBUG-49771 Fixes: QTBUG-95108 Fixes: QTBUG-95289 Pick-to: 6.2 6.2.0 5.15 Change-Id: Ie5d0aafa562b5097e089cafc83ae227c75c6d752 Reviewed-by: Tor Arne Vestbø <email@example.com>