Frameworks: push recents preload time a bit up

seems to be that older hw key devices need a bit more
time to preload the recents because sometimes it ends
up in an empty recents screen. Time delay was
a bit to optimistic. Set it to android default
value for short press.

cheers

Change-Id: I40343a351ea968ae7dc663f2f36dbfef9dde93f5