D5950: Implement the new panel icon size ceiling also for Activities.

[Kai Uwe Broulik]

broulik accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R119 Plasma Desktop

BRANCH
  Plasma/5.10

REVISION DETAIL
  https://phabricator.kde.org/D5950

To: hein, #plasma, mart, broulik
Cc: plasma-devel, ZrenBot, spstarr, progwolff, lesliezhai, ali-mohamed, 
jensreuterberg, abetts, sebas, apol, mart, lukas