Fix CI demo step to run independently regardless of test failures

[Copilot]

The demo CLI step in the CI workflow was being skipped when tests failed, preventing demonstration of database functionality during pushes to GitHub.

Changes

• Added conditional execution to demo step with if: success() || failure() to ensure execution regardless of test results
• Removed --no-build flag to allow demo to build independently rather than relying on prior build artifacts

- name: Run Demo CLI
  if: success() || failure()
  run: dotnet run --project SharpCoreDB.Demo

This ensures the demo runs on every CI execution, providing visibility into database functionality even when tests are failing.

Original prompt

solve the demo in the ci. yml as it fails during a push to GitHub

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