Exclude blocked issues from Autopilot (#701)

Author: jackfirth

.github/workflows/autopilot.yml

@@ -18,7 +18,7 @@ jobs:
         uses: actions/checkout@v5
       - name: Assign issue to copilot
         run: |
-          issue_number=$(gh issue list --state open --label 'autopilot-candidate' --search 'no:assignee' --json number --jq '.[].number' | shuf -n 1)
+          issue_number=$(gh issue list --state open --label 'autopilot-candidate' --search 'no:assignee -is:blocked' --json number --jq '.[].number' | shuf -n 1)
           gh issue edit $issue_number --add-assignee "@copilot"
         env:
           GH_TOKEN: ${{ secrets.AUTOPILOT_PAT }}