fix metric value

Author: ezhang6811

.github/workflows/main-build.yml

@@ -124,8 +124,7 @@ jobs:
 
       - name: Publish main build status
         run: |
-          success="${{ needs.build.result == 'success' && needs.application-signals-e2e-test.result == 'success' }}"
-          value="${success}" == "true" && "0.0" || "1.0"
+          value="${{ needs.build.result == 'success' && needs.application-signals-e2e-test.result == 'success' && '0.0' || '1.0'}}"
           aws cloudwatch put-metric-data --namespace 'ADOT/GitHubActions' \
             --metric-name Failure \
             --dimensions repository=${{ github.repository }},branch=${{ github.ref_name }},workflow=main_build \