Camera: Set partial results in result batcher

Camera device session 3.4 has a separate result batcher
instance. The partial result count needs to get initialized
in the same way as ver. 3.2 otherwise the frame batches can
get retired prematurely.

Bug: 79106874
Test: Camera CTS,
run vts --skip-all-system-status-check --skip-preconditions
--primary-abi-only --module VtsHalCameraProviderV2_4Target -l INFO

Change-Id: I36bfb5bc448154f80f4cb94edcfd119048361099