fix: correctly log error output when building (#698)

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pull request. -->
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### Summary

If an error occurs, it is not printed in the CLI.

* as-is:
<img width="611" alt="image"
src="https://github.com/user-attachments/assets/f535b6d7-b4bd-4274-868e-30640ca1f653">

* to-be:
<img width="626" alt="image"
src="https://github.com/user-attachments/assets/8bd6d0c5-da74-4230-bb8f-02adf3bb10b4">




<!-- What existing problem does the pull request solve? Can you solve
the issue with a different approach? -->

### Test plan
1. `react-native-config.js` file: 
```js
test // That code will cause an error.
```
2. yarn prepare

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screenshots if this changes anything visual. -->

Author: gronxb

packages/react-native-builder-bob/src/utils/runRNCCli.ts

@@ -7,7 +7,7 @@ import { spawn } from './spawn';
 export async function runRNCCli(
   args: string[],
   options: SpawnOptions = {
-    stdio: 'ignore',
+    stdio: ['ignore', 'ignore', 'pipe'],
   }
 ) {
   return await spawn('npx', ['@react-native-community/cli', ...args], options);