fix: Prevent loops in resolving final URL Rewrite

[pmzandbergen]

Description (*)

URL rewrites with the same request and target path will create a loop in the GraphQL resolver.

Related Pull Requests

N/A

Fixed Issues (if relevant)

1. Fixes magento/magento2#38692

Manual testing scenarios (*)

1. Create a URL rewrite with the same request and target path
2. Resolve the URL rewrite using GraphQL
3. Test with and without this PR

Questions or comments

N/A

Contribution checklist (*)

• [ ] Pull request has a meaningful description of its purpose
• [ ] All commits are accompanied by meaningful commit messages
• [ ] All new or changed code is covered with unit/integration tests (if applicable)
• [ ] README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• [ ] All automated tests passed successfully (all builds are green)