D5520: [platforms/x11] Do not grab touch events

[Martin Gräßlin]

graesslin created this revision.
Restricted Application added a project: KWin.
Restricted Application added subscribers: kwin, plasma-devel.

REVISION SUMMARY
  Grabbing the touch events seems to cause issues. It seems to also grab
  pointer events from touchpad and breaks touch input on other events.
  
  Also testing shows that we don't need it and get touch ownership events
  for our screenedge windows reported.
  
  BUG: 378951

TEST PLAN
  Triggered touch screen edge, normal system usage on X11

REPOSITORY
  R108 KWin

BRANCH
  no-touch-grab

REVISION DETAIL
  https://phabricator.kde.org/D5520

AFFECTED FILES
  plugins/platforms/x11/standalone/xinputintegration.cpp

To: graesslin, #plasma, #kwin
Cc: plasma-devel, kwin, spstarr, progwolff, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol
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