Fetch specific workflow versions and align run-level configuration with agents and teams

The GET /workflows/{id} endpoint now accepts a version query parameter, allowing callers to fetch a specific version of a workflow rather than always receiving the latest. Workflows also now support run-level parameters — metadata, dependencies, add_dependencies_to_context, and add_session_state_to_context — bringing them to parity with agents and teams for consistent configuration across all execution types.

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Details:

Pass ?version=<version> to GET /workflows/{id} to retrieve a specific workflow version
metadata, dependencies, add_dependencies_to_context, and add_session_state_to_context are now available at the run level on workflows
Aligns the workflow runtime configuration surface with agents and teams
No breaking changes; existing workflow definitions and API calls are unaffected