[Qt] Unreviewed gardening.

* platform/qt/TestExpectations: Skip failing tests after r146361 and r146399.
* platform/qt/fast/repaint/caret-with-transformation-expected.png: Added after r139282.
* platform/qt/fast/repaint/caret-with-transformation-expected.txt: Added after r139282.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146450 268f45cc-cd09-0410-ab3c-d52691b4dbfc