Adjust parcoords tests and revise karma config #5633
Merged
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Before this PR
webgl-jasmine
parcoords
tests fail randomly as the browser disconnect (sometimes succeed once out of 8 runs).https://app.circleci.com/pipelines/github/plotly/plotly.js/3731/workflows/98768ace-6fe1-47c7-9db4-0f586e85b9c1/jobs/111372

This was clearly annoying (also hard to debug) for any development/maintenance work.
This PR addresses that by making each run more stable.
@plotly/plotly_js