Summary:
using the same trick as elsewhere, set the currentIndex
and move the view to currentIndex right at startup
the only way to be sure is onContentHeightChanged
as there are no signals for when "the view has been
populated and settled up"
Test Plan:
the view is at the right state since the first frame shown,
no more jumping around effect
Reviewers: #plasma, davidedmundson
Reviewed By: #plasma, davidedmundson
Subscribers: davidedmundson, plasma-devel, kwin, #kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D4703
299d23230c