Example "user_container.py" doesn't work

[abschm]

Pre-bug-report checklist

1. This bug can be reproduced using pure Argo YAML

• Yes 👉 Please report a bug to the Argo Workflows GitHub 👈
• No

If yes, it is more likely to be an Argo bug unrelated to Hera. Please double check before submitting an issue to Hera.

2. This bug occurs in Hera when...

• exporting to YAML
• submitting to Argo
• running on Argo with the Hera runner
• other:

Bug report

Describe the bug
A clear and concise description of what the bug is:
The example "user_container.py" and the corresponding "user-container.yaml" fails in Argo with error "task 'sidecar-volume-mount-8dbjt.foo' errored: volume 'something' not found in workflow spec".
Manually using w.to_file() on the code in "user_container.py" and then submitting that also fails with the same message.

To Reproduce
Full Hera code to reproduce the bug:
https://github.com/argoproj-labs/hera/blob/main/examples/workflows/user_container.py
https://github.com/argoproj-labs/hera/blob/main/examples/workflows/user-container.yaml

Expected behavior
A clear and concise description of what you expected to happen:
The example code should not fail.

Environment

• Hera Version: 5.14.0
• Python Version: 3.10.12
• Argo Version: 3.4.16

Additional context
Add any other context about the problem here.