feat(agentflow): Node Info Icon on Toolbar Action (FLOWISE-375) (#6053)

- Reintroduced NodeInfoDialog component with improved structure and functionality.
- Added new properties (badge, tags, documentation) to NodeData interface for better metadata handling.
- Updated flowExport and nodeFactory utilities to preserve new metadata during data processing.
- Implemented tests for NodeInfoDialog to ensure proper rendering and functionality.
- Adjusted Jest configuration to include coverage for the new NodeInfoDialog component.