test: Update karma test runner files

[rmi22186]

Instructions

1. PR target branch should be against development
2. PR title name should follow this format: https://github.com/mParticle/mparticle-workflows/blob/main/.github/workflows/pr-title-check.yml
3. PR branch prefix should follow this format: https://github.com/mParticle/mparticle-workflows/blob/main/.github/workflows/pr-branch-check-name.yml

Summary

Our Twitter web kit's tests were not consistent in folder structure. This PR makes it consistent with https://github.com/mparticle-integrations/mparticle-javascript-integration-criteo, which we did this most recently for.

Testing Plan

• Was this tested locally? If not, explain why.
  Node tests still are successful, index.html tests are still successful.

Reference Issue (For mParticle employees only. Ignore if you are an outside contributor)

• Closes https://go.mparticle.com/work/SQDSDKS-5984

[alexs-mparticle]

Looks good, but make sure the tests pass.

[rmi22186]

@alexs-mparticle tests passing now. it was missing the package-lock.json for the npm ci command