flaky e2e tests

[drjova]

the references.test.js e2e is flaky, we should check how we can fix it because it blocks master from time to time.

1) Reference container
       Self curation
         curates reference successfully:
     AssertionError: Timed out retrying after 10000ms: Expected to find element: `[data-test-id="reference-embedded-search"]`, but never found it.
      at Context.eval (webpack://e2e/./cypress/e2e/references.test.js:122:9)
      at runnable.fn (http://localhost:8080/__cypress/runner/cypress_runner.js:138261:19)
      at callFn (http://localhost:8080/__cypress/runner/cypress_runner.js:156877:21)
      at Runnable.run (http://localhost:8080/__cypress/runner/cypress_runner.js:156864:7)
      at <unknown> (http://localhost:8080/__cypress/runner/cypress_runner.js:1[627](https://github.com/inspirehep/inspirehep/actions/runs/12636297822/job/35208124084#step:11:628)88:30)
      at PassThroughHandlerContext.finallyHandler (http://localhost:8080/__cypress/runner/cypress_runner.js:4072:23)
      at PassThroughHandlerContext.tryCatcher (http://localhost:8080/__cypress/runner/cypress_runner.js:1807:23)
      at Promise._settlePromiseFromHandler (http://localhost:8080/__cypress/runner/cypress_runner.js:1519:31)