Bluetooth: uprev: Add workaround for AVRCP duration update

BlueZ 5.66 has a known issue where the media player duration property
is not updated via DBus if the "Duration" key already exists. This
causes test failures when verifying metadata updates.

This patch adds a workaround that parses the `btsnoop` log.

BUG=b:479735319
TEST=Verified that `bluetooth_AdapterAUHealth.au_avrcp_media_info_test`
pass

Change-Id: I11f03e564aabdc4e46aae3ec4456d178bbcde527
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/chameleon/+/7532375
Auto-Submit: Yun-hao Chung <howardchung@chromium.org>
Reviewed-by: John Lai <johnlai@google.com>
Tested-by: Yun-hao Chung <howardchung@chromium.org>
Commit-Queue: Yun-hao Chung <howardchung@chromium.org>