investigate rspec-dummy-app-node-renderer flaky specs

[ihabadham]

two flaky specs always fail on prs when workflow run. but they seem to pass from first rerun failed tests only. both rerun workflow from start and rerun workflow from failed don't work.

[ihabadham]

they're the ones mentioned in #543
this also happens sometimes:
https://app.circleci.com/pipelines/github/shakacode/react_on_rails_pro/2478/workflows/3c4303e3-6bd6-4b46-885f-90d7ab6d1d77/jobs/23736/tests#failed-test-0

so the above one and the react router failures share this: streamed component tests

and also this page has some: Pages/async_on_server_sync_on_client
the one mentioned in #543 and this:
https://app.circleci.com/pipelines/github/shakacode/react_on_rails_pro/2487/workflows/0139e974-44f6-458e-8c1f-e98ef31ce995/jobs/23820?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-checks-link&utm_content=summary