fix: Cocoapods error message conflicting with the step title

[azizbecha]

Summary

When Cocoapods installation fails, the error message is printed in the same line with the instruction, which makes it harder to catch or read. So I added it in another separate log to make it more readable.

Test Plan

This is how it was before implementing the fix

Checklist

• Documentation is up to date.
• Follows commit message convention described in CONTRIBUTING.md.
• For functional changes, my test plan has linked these CLI changes into a local react-native checkout (instructions).