Adjust some widget auto test expectations

More need to be adjusted, but this is a first step.

Also move the QSKIP form tst_QWebEngineFrame::loadInSignalHandlers
to its _data method to avoid seeing the skip message for every entry.

Change-Id: If8d17fd992cb12a4a35cf036f80431e0cab3bb2f
Reviewed-by: Pierre Rossi <pierre.rossi@gmail.com>