[GTK] Gardening, update TestExpectations and add baseline
Created attachment 395027 [details] Patch
imported/w3c/web-platform-tests/css/selectors/focus-visible-009.html is a new test add in r259194. The GTK baseline differs from the general in one value. It both cases the result of the tests is FAIL.
Committed r259285: <https://trac.webkit.org/changeset/259285>
<rdar://problem/61103922>