[Wrangler/Workflows] Add warning on deploy of workflows belonging to other workers (#12513)

Author: pombosilva

.changeset/workflow-conflict-warning.md

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+"wrangler": patch
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+Add confirmation prompt when deploying workflows with names that belong to different workers.
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+When deploying a workflow with a name that already exists and is currently associated with a different worker script, Wrangler will now display a warning and prompt for confirmation before proceeding. This helps prevent accidentally overriding workflows.
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+In non-interactive environments this check is skipped by default. Use the `--strict` flag to enable the check in non-interactive environments, which will cause the deployment to fail if workflow conflicts are detected.