Bug: object dereference must be type of object but got "string"

[dan-ih]

actionlint version tested : 1.6.23

Issue description:

Getting the actionlint validation failure "receiver of object dereference "refname" must be type of object but got "string"", but the workflow is showing the values as expected in github actions.

How to replicate:

Given the following (truncated) reusable workflow

workflow.yml:

name: Run test automation group
on:
  workflow_call:
    inputs:
      test_data:
        required: true
        type: string
jobs:
  run-tests:
    runs-on: ubuntu-20.04
    env:
      COMPONENT: ${{ matrix.components.TEST.COMPONENT }}
      PROFILE: ${{ matrix.components.TEST.PROFILE }}
    strategy:
      fail-fast: false
      matrix:
        components:
          - ${{ fromJson(inputs.test_data).TESTS.TEST }}
     steps:
       - ...

actionlint fails on references to elements in the matrix:

grtest.yml:16:22: receiver of object dereference "test" must be type of object but got "string" [expression]
   |
16 |       COMPONENT: ${{ matrix.components.TEST.COMPONENT }}
   |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
grtest.yml:17:20: receiver of object dereference "test" must be type of object but got "string" [expression]
   |
17 |       PROFILE: ${{ matrix.components.TEST.PROFILE }}

Structure of the 'test_data' json input:

{
    "GROUP": "Some group",
    "TESTS": [
        {
            "TEST": {
                "COMPONENT": "one_component"
            }
        },
        {
            "TEST": {
                "COMPONENT": "another_component"
            }
        }
    ]
}

Github actions is able to reference these values without issues.