Bug: Jobs allow steps with the same/duplicate names

[lithorus]

Describe the bug

Not sure if this is intended, but when testing adding steps dynamically I noticed that the model allows to have steps with the same name. This makes it difficult to eg. remove specific steps by name.

Expected Behaviour

Steps with the same name should not be allowed.

Current Behaviour

Steps with the same name is allowed.

Reproduction Steps

1. Create job with 2 steps having the same name.

Environment

1. Ubuntu 24.04
2. Python 3.12.3
3. mainline (b6f4737)

[epmog]

Thanks for reporting this, sorry it took so long for us to get to it.

This is definitely a defect in the spec, and something that we'll looking into fixing as part of the current spec.

Moving this to the spec repo.