backends/drm: Fix leaving dangling dpms input event filter
If the output is turned back on before m_turnOffTimer expires, the dpms input event filter won't be reset and all input events will go to the void. BUG: 460322
If the output is turned back on before m_turnOffTimer expires, the dpms input event filter won't be reset and all input events will go to the void. BUG: 460322
mentioned in commit b0851162
·mentioned in commit b0851162