GRIMDEMO: Fix setting of mumble and talk chores.
(cherry picked from commit ea5646c0c12b70f3e9df879e717e2840b0ccd8f3)
GRIM: Ensure that Chore::setLastFrame() runs all the keys.
(cherry picked from commit 2df612371876add629383dbdf9d79c0f99e60da8)