fix: skip SonarCloud analysis when SONAR_TOKEN is unavailable (e.g., Dependabot PRs)

Co-authored-by: Raouf25 <4578855+Raouf25@users.noreply.github.com>

Author: Copilot

.github/workflows/reusable-build.yml

@@ -50,6 +50,7 @@ jobs:
           check_name: 'Test Results'
 
       - name: Build and analyze with SonarCloud
+        if: ${{ secrets.SONAR_TOKEN != '' }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}