title: GitHub action for issue_comment doesn't shown in checks for PR
body: <p>I created a GitHub action on:issue_comment, I can see the flow running only in the action tab, but not in the PR, where I made the comment.
  I want to comment in a PR and trigger a check on that PR (not on master)</p>
  
  <p>here is my workflow:</p>
  
  <pre><code>name: issue-comment-CI-test 
  
  on: 
    issue_comment:    
      types: [created]    
  jobs:   
    build:    
  
      runs-on: ubuntu-latest  
  
      steps:  
      - uses: actions/checkout@v1 
      - name: Run a one-line script   
        run: echo Hello, world!   
      - name: Run a multi-line script 
        run: echo ${{ github.event.comment.body }}
  </code></pre>
  
  <p>currently, I'm just printing the comment body, But I plan to check the body, and if it is equal to "run integration tests" then I'll run my integration tests (maven)</p>