Fix npm workflow conditional expressions and defaults

- Correct conditional logic for docker_enabled and npm_publish_enabled parameters
- Add proper defaults for boolean parameters in npm-release-reusable workflow
- Ensure workflow properly handles optional Docker and npm publishing features

Author: shankar-gpio

.github/workflows/release-sandbox.yml

@@ -19,7 +19,7 @@ jobs:
       dry-run: ${{ inputs.dry_run }}
       docker-enabled: true
       docker-image-name: sandbox
-      docker-build-args: 'REFRAME_API_URL=http://localhost:3000'
+      docker-build-args: 'REFRAME_API_URL=https://reframeapi.goplasmatic.io'
     secrets:
       GH_PAT: ${{ secrets.GH_PAT }}
       ACR_URL: ${{ secrets.ACR_URL }}