Cannot access matrix inside `if`

Describe the bug
Cannot access matrix inside if in jobs.

To Reproduce
Steps to reproduce the behavior:

# workflow.yml

name: CI

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        module: ['admin', 'server']
    if: ${{ contains('admin', matrix.module) }}

    steps:
      - name: Run a one-line script
        run: echo Hello, world!

When I run this action, i got an error like below.

Expected behavior
I can access to 'matrix' in if. In docs,

You can access this context from any job or step in a workflow.

Start with the workflow.yml reproduction and the linked matrix-context documentation, focusing on the job-level if expression and its access to matrix.module. Verify whether the documented context availability matches the observed error. Done means the behavior is clarified and the workflow either works as expected or the documentation accurately describes the limitation.