Fixes: failed Ut_MKeyboardHost
Fixes: failed Ut_MKeyboardHost

RevBy: TrustMe
Details: Failed Ut_MKeyboardHost is because now we send both backspace key press
and key release in MKeyboardHost::sendBackSpaceKeyEvent().

develersrl/maliit-demo-qml,RHawkeyed/plugins,maliit/plugins,RHawkeyed/plugins,maliit/plugins,develersrl/maliit-demo-qml,KDE/plasma-maliit-plugins,develersrl/maliit-demo-qml,RHawkeyed/plugins,KDE/plasma-maliit-plugins,RHawkeyed/plugins,maliit/plugins,KDE/plasma-maliit-plugins,develersrl/maliit-demo-qml,maliit/plugins,RHawkeyed/plugins,KDE/plasma-maliit-plugins