Function handleSetRuntime

handleSetRuntime(
    message: SetRuntimeMessage,
    selectRuntime: RuntimeSelectCallback,
    updateStore?: RuntimeSelectCallback,
): void
Handler for set-runtime messages (from local Jupyter server). Creates a RuntimeJSON object from base URL and token.
Parameters
- message: SetRuntimeMessage
  The set-runtime message from extension
- selectRuntime: RuntimeSelectCallback
  Callback to update runtime state (from useRuntimeManager)
- OptionalupdateStore: RuntimeSelectCallback
  Optional callback to update editor-specific store
Returns void
Example
```
case "set-runtime":
  handleSetRuntime(message, selectRuntime, (rt) => store.getState().setRuntime(rt));
  break;
```
- Defined in webview/utils/runtimeMessageHandlers.ts:142