fix(cli): wait for background auto-update before relaunching (#20904)

packages/cli/src/utils/processUtils.ts

@@ -5,6 +5,7 @@
  */
 
 import { runExitCleanup } from './cleanup.js';
+import { waitForUpdateCompletion } from './handleAutoUpdate.js';
 
 /**
  * Exit code used to signal that the CLI should be relaunched.
@@ -15,6 +16,7 @@ export const RELAUNCH_EXIT_CODE = 199;
  * Exits the process with a special code to signal that the parent process should relaunch it.
  */
 export async function relaunchApp(): Promise<void> {
+  await waitForUpdateCompletion();
   await runExitCleanup();
   process.exit(RELAUNCH_EXIT_CODE);
 }