test: update topos messaging tests

[Freyskeyd]

Description

Update tests in order to remove static and manually generated data fixtures.

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

[JDawg287]

@Freyskeyd We are still missing the fixes for the final test which are supposed to be in the same PR.
That would be the reverts if trying to mint for zero address test.