[Infra UI] Fail integration tests when async bundles are loaded too eagerly

[weltenwort]

📓 Summary

In order to avoid accidental eager loading of async chunks like in #122941 we want to have an integration test that checks this.

✔️ Acceptance criteria

• An integration test exists, that fails when any of the infra.chunk.N.js bundles are loaded on the login screen.

💡 Implementation hints

It's not certain this is possible using the webdriver API right now. If it only works for a certain browser we can limit the test case using tags.

[elasticmachine]

Pinging @elastic/infra-monitoring-ui (Team:Infra Monitoring UI)

[roshan-elastic]

Hey @weltenwort - this one still need doing?

[weltenwort]

It's still a valid concern IMHO. Whether it's important enough to do any time soon is a different question. 🤷

[smith]

Closing. We can reopen if this is causing us problems.