Function handleRuntimeTerminated

handleRuntimeTerminated(
selectRuntime: RuntimeSelectCallback,
updateStore?: RuntimeSelectCallback,
): void
Handler for kernel-terminated and runtime-terminated messages. Clears the current runtime immediately to ensure cleanup.

IMPORTANT: For Datalayer runtimes, this terminates the runtime on the server, which causes the kernel URLs to become inaccessible. The jupyter-react Output components will show CORS errors as they try to disconnect - this is expected and unavoidable. The errors are harmless and will stop once cleanup completes.
Parameters
- selectRuntime: RuntimeSelectCallback
  Callback to update runtime state (from useRuntimeManager)
- OptionalupdateStore: RuntimeSelectCallback
  Optional callback to update editor-specific store
Returns void
Example
```
case "kernel-terminated":
case "runtime-terminated":
  handleRuntimeTerminated(selectRuntime, (rt) => store.getState().setRuntime(rt));
  break;
```
- Defined in webview/utils/runtimeMessageHandlers.ts:125