chore: Migrate e2e tests to work with sync-to-blockchain autopilot mode

[MartinquaXD]

Background

Before we make sync-to-blockchain the one and only run mode we need to make sure that e2e tests still pass.
Currently many test rely on the fact that new auctions get built periodically. When we switch to the synchronized mode this will only happen whenever we mint a new block.

Also the new run mode gives us a few more guarantees on the ordering on some events so we can revisit some tests to see if they can become stricter / more meaningful. One example was discussed here.

Acceptance criteria

e2e tests pass without flakiness when using sync-to-blockchain everywhere.

[github-actions]

This issue has been marked as stale because it has been inactive a while. Please update this issue or it will be automatically closed.

[m-lord-renkse]

#3040