fix: resolve GH_TOKEN auth conflict in auto-reviewer workflow

Author: gursewak1997

.github/workflows/auto-review.yml

@@ -27,9 +27,14 @@ jobs:
           pip install pyyaml
           
       - name: Authenticate with GitHub
-        run: echo "${{ secrets.GH_PAT }}" | gh auth login --with-token
-        env:
-          GH_TOKEN: ${{ secrets.GH_PAT }}
+        run: |
+          if [ -z "${{ secrets.GH_PAT }}" ]; then
+            echo "Error: GH_PAT secret is not set"
+            exit 1
+          fi
+          # Clear GH_TOKEN to avoid conflicts with GITHUB_TOKEN
+          unset GH_TOKEN
+          echo "${{ secrets.GH_PAT }}" | gh auth login --with-token
           
       - name: Assign reviewer
         env: