KDE update was still often failing on #1943943, so this tries a
bit harder to work around it. We add a 'refresh' needle for KDE,
and tweak the 'retry' logic to click it if we get to that point.
Note adding the needle also changes behaviour slightly - we may
click this needle if we see it on first entering the screen. So
either change may be helping. Either way, this does make the test
more reliable.
Signed-off-by: Adam Williamson <awilliam@redhat.com>
