audio: Fix HAL reply handling in CompressedOffloadOutputStreamTest

Increase data position based on the HAL consumption of data,
on the production by the test.

Bug: 254806348
Test: atest VtsHalAudioV7_1TargetTest:CompressedOffloadOutputStream/CompressedOffloadOutputStreamTest
Change-Id: I33a86ec62662ba4738c70c15b77ece0135da7d29
(cherry picked from commit bae409f6c69fe8874e7c7195805b0483aa21f7d6)
1 file changed