New dag/steps decorators generate incorrect valueFrom and lose output descriptions

[alicederyn]

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. I have searched for existing issues

• Yes

3. 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
description is being dropped from Parameter annotations on Output types when using @wt.steps decorator and similar.

To Reproduce
Full Hera code to reproduce the bug:

from typing import Annotated
from hera.shared import global_config
from hera.workflows import Input, Output, Parameter, Workflow

global_config.experimental_features["decorator_syntax"] = True

class ExampleOutput(Output):
  field: Annotated[str, Parameter(description="Some field")]

w = Workflow(name="my-workflow")

@w.script()
def my_script(_: Input) -> ExampleOutput:
  return ExampleOutput(field="Hello world!")

@w.steps()
def steps(_: Input) -> ExampleOutput:
  result = my_script(Input())
  return ExampleOutput(field=result.field)

Expected behavior
The following YAML for the step output:

      - description: Some field
        name: field
        valueFrom:
          parameter: '{{steps.result.outputs.parameters.field}}'

What I'm actually seeing is:

      - name: field
        valueFrom:
          parameter: '{{steps.result.outputs.parameters.None}}'

Environment

• Hera Version: 5.17.0
• Python Version: 3.11.8
• Argo Version: N/A

Additional context
I believe the name is being mistakenly set to None here:

hera/src/hera/workflows/_mixins.py

Line 744 in d75a1b3

"{{" + f"{subnode_type}.{subnode_name}.outputs.parameters.{param_or_artifact.name}" + "}}"

And the description is being discarded here:

hera/src/hera/workflows/io/_io_mixins.py

Line 229 in d75a1b3

outputs.append(Parameter(name=annotation.name, value_from=ValueFrom(parameter=templated_value)))