Making the Delegation Backend Unit Test soft fail

[SanabriaRusso]

Explain your changes:

• Made the delegation backend unit test optional by including the soft_fail parameter to true in the step command.

Explain how you tested your changes:

• Executing a CI run and confirming that even if the unit test fails it does not impact the overall job results.

Checklist:

• Dependency versions are unchanged
  • Notify Velocity team if dependencies must change in CI
• Modified the current draft of release notes with details on what is completed or incomplete within this project
• Document code purpose, how to use it
  • Mention expected invariants, implicit constraints
• Tests were added for the new behavior
  • Document test purpose, significance of failures
  • Test names should reflect their purpose
• All tests pass (CI will check this if you didn't)
• Serialized types are in stable-versioned modules
• Does this close issues? List them

• Closes #0000

[SanabriaRusso]

!ci-build-me