fix(ci): pass benchmark summary via env var to avoid backtick-in-template-literal JS error

Author: vietnguyentuan2019

.github/workflows/benchmark.yml

@@ -112,10 +112,13 @@ jobs:
       - name: Post PR comment
         if: always() && github.event_name == 'pull_request'
         uses: actions/github-script@v7
+        env:
+          BENCH_EXIT_CODE: ${{ steps.bench.outputs.exit_code }}
+          BENCH_SUMMARY: ${{ steps.bench.outputs.summary }}
         with:
           script: |
-            const exitCode = '${{ steps.bench.outputs.exit_code }}';
-            const summary  = `${{ steps.bench.outputs.summary }}`;
+            const exitCode = process.env.BENCH_EXIT_CODE || '0';
+            const summary  = process.env.BENCH_SUMMARY  || '';
             const passed   = exitCode === '0';
             const icon     = passed ? '✅' : '❌';
             const headline = passed