Is it possible to request workflow_dispatch inputs from outside a workflow?

In a workflow, you can use workflow_dispatch with inputs to have GitHub create fields when someone manually triggers the workflow.

Is it possible for a composite action to create those input fields as well? I can’t imagine how. The composite action is run in the steps, much farther down and in than the events declaration.

Is there any other way to get these fields from the outside? Could you import another YAML file from a different repository at that level of the workflow? Some other way?

This is the workflow code I’m referring to:

name: "Some workflow"
on:
  workflow_dispatch:
    inputs:
      some_var_name:
        description: "A value you can enter into a field that is auto-generated by GitHub for a manually triggered workflow."

I have a bunch of identical workflows. I’d like to be able to abstract those inputs so they can be changed in every workflow at once.