chore: remove hard deps between nodes

[Freyskeyd]

Description

This PR removes the service_healthy status of the topos node and switch to service_started.
In the current setup there is only one bootnode where normally we should have more.

(this is linked to this PR on topos)

PR Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added or updated tests that comprehensively prove my change is effective or that my feature works