Feature/564 bug trains randomly stop/uninitialized trains are not added to reservations

[Lietze]

Fixes #564

Description (what might a PO or reviewer want to know?)

PR checklist

• [ ] Acceptance criteria fulfilled
• [ ] Additional features are tested
• [ ] Docs (code, wiki & diagrams) updated
• [ ] Breaking changes anounced
• [ ] Added classes that inherit from BaseModel to src.constants.tables
• [ ] Dev-branch has been merged into local branch to resolve conflicts
• [ ] Tests and linter have passed AFTER local merge
• [ ] Another dev reviewed and approved

[LucasDerReisende]

With this standard scenario, the trains will still stop for me