Reduce priority of the kitchen sink cluster activity to -1

This cluster activity is just a placeholder, so by setting the priority
to -1 we ensure that "real" cluster activities will be selected by
default (since at the moment intent resolution just picks an activity
with maximal priority).

Bug: 63861009
Test: Manually on owl.
Change-Id: I71117a6ac866bb751356998c90e35ede042c9d8e
1 file changed