fix(tests): add Bedrock replay recordings (#6166)

## Summary
- add replay recordings for the two Bedrock streaming chat-completion
hashes introduced after the ogx_open_client switch
- fixes the missing-recording failures from PR #6016 without changing
runtime behavior

## Test Plan
- env AWS_BEDROCK_BEARER_TOKEN=replay-mode-dummy-key
AWS_DEFAULT_REGION=us-west-2 uv run --no-sync
./scripts/integration-tests.sh --stack-config ci-tests --setup bedrock
--suite bedrock --inference-mode replay
- Result: 6 passed, 6 skipped

Signed-off-by: Sumanth Kamenani <skamenan@redhat.com>

Author: skamenan7