SDLC: Improved Workflow Cleanup During Project Import

We've updated how workflows are handled during project imports to ensure better consistency and prevent unintended workflow execution. When importing a project that has had workflows removed, those workflows will now be deleted in the destination project rather than being detached and preserved as standalone workflows.

For example, when importing a project from development to production, any workflows deleted in development will now be automatically removed from the production project, maintaining perfect synchronization between environments.

This change helps prevent potential confusion and security risks from orphaned workflows that previously would have continued running outside project scope.