Contact modal frontend test timeouts in CI

[richardebeling]

The contact-modal-opens-with-allow-editors-to-edit test in evap/static/ts/tests/frontend/contributor-evaluation-edit.ts (from #1809) fails sometimes, e.g. here: https://github.com/e-valuation/EvaP/actions/runs/3280049485/jobs/5400375416#step:9:8.
The other contact modal test is probably also affected.

I don't know if its a test failure (because the test waits for something to happen on the page that will not happen) or simply a timeout because the CI VM is running slowly. We probably want to have tests where we can distinguish between the two.

In #1809, we added CSS to skip all animations at some point. Maybe we can replace the "wait for element to become visible" instructions in the test now. I think I haven't checked that after adding the CSS.

[richardebeling]

Oh, I missed this issue when I created #1848. Well, now they are duplicates. Right now, I'm very close to just removing the test since it annoys more than it helps right now, so I'm closing this issue instead of the newer one.