fix(sonar): fail after coverage generation errors

.github/workflows/sonarcloud.yml

@@ -785,6 +785,12 @@ jobs:
             -Dsonar.organization=storytold
             -Dsonar.rust.lcov.reportPaths=lcov.info
             "-Dsonar.cpd.exclusions=${{ steps.project.outputs.cpd }}"
+      - name: Fail on Rust coverage generation failure
+        if: steps.coverage.outcome == 'failure'
+        shell: bash
+        run: |
+          echo "::error::cargo llvm-cov failed to build the test archive or write lcov.info"
+          exit 1
       - name: Fail on JavaScript/TypeScript test failures
         if: steps.node-coverage.outputs.status != '' && steps.node-coverage.outputs.status != '0'
         env: