Dependency Check and Warning Before Network Intent Deletion

NetBrain currently allows a Network Intent to be deleted without checking whether it is referenced in an Automated Data Table, runbook, or other automation, which can silently break dependent workflows. This enhancement would introduce a dependency check that runs before deletion, warning the user and identifying where the intent is referenced if it is still in use. Deletion would be blocked until the user removes the intent from all referencing automations, allowing the system to proceed safely once no dependencies remain. This capability would help customers avoid accidental deletion of intents that are actively relied upon, reducing the risk of unplanned automation failures.