SlimRecents: fix sometimes missing first task

apply the fix for aosp recents

https://github.com/SlimRoms/frameworks_base/commit/760413134a5efe60c1d4473322e467152d71c80b

as well to slimrecents

Change-Id: Ibce0707cf516034675451d0440608bafe097c92d
Merge "SlimRecents: fix sometimes missing first task" into du44