[widgetexplorer] Fix animate in animation
The animation in comes in from offscreen on the left.
"to: 0" was correct when we had one column. With the 2 column view it
means we animate two items on top of each other and jump when the
animation completes. We want to animate to the final position the item
will end up in.
It bugs me more than it probably should.
Search for "asdfasdfsadfsadf"
Animation now looks ok, instead of horrific
Reviewers: Plasma, ngraham
Reviewed By: ngraham
Subscribers: ngraham, plasma-devel
Differential Revision: https://phabricator.kde.org/D26698