skip step better UI

[HugoCasa]

[!IMPORTANT] Add 'skipped' status to flow modules, updating backend logic, frontend UI, and API schema.

• Backend:
  • Add skipped field to FlowStatusModule in flow_status.rs and worker_flow.rs.
  • Update update_flow_status_after_job_completion_internal() in worker_flow.rs to set skipped based on job kind.
• Frontend:
  • Add skipped property to ModuleStatus.svelte and FlowStatusViewerInner.svelte.
  • Update getStateColor() in util.ts to change color for skipped modules.
  • Add skip icon to FlowModuleSchemaItem.svelte and MapItem.svelte.
• API:
  • Add skipped field to FlowStatusModule in openflow.openapi.yaml.

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