[KCollapsibleGroupBox] Fix QTimeLine::start warning at runtime
Summary:
KCollapsibleGroupBox::overrideFocusPolicy calls toggle();toggle()
which starts the same QTimeLine twice before it has a change to end.
This prints out an annoying runtime warning.
Test Plan:
kdialog --detailedsorry foo blah
This no longer shows
WARNING: QTimeLine::start: already running
Reviewers: cfeck, ngraham, elvisangelaccio
Reviewed By: cfeck
Subscribers: kde-frameworks-devel
Tags: Frameworks
Differential Revision: https://phabricator.kde.org/D24254