Issue using with_param and Pydantic IO

[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 👈
• [X] 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

• [X] Yes

3. This bug occurs in Hera when...

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

Bug report

Describe the bug When using with_param with a function using Pydantic IO, an extra argument is added with a name matching the incidental argument name used by the script-decorated function, not the parameters from the Pydantic Input type.

To Reproduce Full Hera code to reproduce the bug:

from hera.workflows import Workflow, Input, Output, script, Steps
from hera.shared import global_config

global_config.experimental_features["script_pydantic_io"] = True

class ListOutput(Output):
    values: list[str]

class PrintInput(Input):
    value: str

@script()
def produce_list() -> ListOutput:
    return ListOutput(values=["item1", "item2"])

@script()
def print_value(input: PrintInput) -> None:
    print("Value:", input.value)


with Workflow(name="my-workflow") as w:
    with Steps(name="steps"):
        list_step = produce_list(arguments={})
        print_value(with_param=list_step.get_parameter("values"))

Expected behavior

- arguments:
    parameters:
    - name: value  # This is actually "input"
      value: '{{item}}'

Environment

• Hera Version: 5.17.1
• Python Version: 3.11.8
• Argo Version: N/A

Additional context This is the same root cause as https://github.com/argoproj-labs/hera/issues/861, i.e. the code in _get_params_items_from_source, but can't be worked around by avoiding using alternative names. https://github.com/argoproj-labs/hera/blob/a08f744cd9d7ca30091e7ab51e80bd18e3116010/src/hera/workflows/_meta_mixins.py#L266-L288