Composite action arguments error

Describe the bug

Hi, I use YAML + GitHub Workflow schema + composite actions

Expected Behavior

No errors

Current Behavior

Steps to Reproduce

Here are several snippets:

• settings.json

{
    "yaml.schemas": {
        "https://json.schemastore.org/github-action.json": "**/actions/**/action.yml",
        "https://json.schemastore.org/github-workflow.json": "**/workflows/**/*.yml"
    }
}

• workflow.yaml:

steps:
  - name: Cache ${{ env.root }}
    uses: ./.github/actions/each-devshell
    with:
      ROOT: ${{ env.root }}
      SHELLS: ${{ env.root_devShells }}

• action.yml:

inputs:
  ROOT:
    description: a dir for which this action should be run
    required: true
  SHELLS:
    description: devShells names
    required: true

Environment

• Windows
• Mac
• Linux
• other (please specify)

Start with the settings.json schema mappings and reproduce the diagnostic using workflow.yaml and action.yml, focusing on the composite action's ROOT and SHELLS inputs. Done means the shown valid workflow and action metadata produce no argument errors under the GitHub Workflow schema.