Fix Wifi & Bluetooth slice can't show on search result

root cause: we remove wifi & bluetooth preference screen key from search
indexing, this cause these 2 special slices can't map to correct key

solution: rename preference key for mapping

Bug: 149366072
Test: robotest & manual
Change-Id: Id424e63c4f97ccd6f58a80aaa414807774159512
4 files changed