D28150: Broadcast application menu on PWM interface initiaization

cblack created this revision.
cblack added a reviewer: KWin.
Herald added a project: KWin.
Herald added a subscriber: kwin.
cblack requested review of this revision.

REVISION SUMMARY
  By the time AbstractClient::setupWindowManagementInterface() is called,
  it's possible for a window to already have an application menu, and not update them
  afterwards.

REPOSITORY
  R108 KWin

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D28150

AFFECTED FILES
  abstract_client.cpp

To: cblack, #kwin
Cc: kwin, Orage, cacarry, LeGast00n, The-Feren-OS-Dev, cblack, jraleigh, zachus, fbampaloukas, GB_2, mkulinski, ragreen, jackyalcine, iodelay, crozbo, bwowk, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, hardening, romangg, jensreuterberg, abetts, sebas, apol, ahiemstra, mart