fix: redirect status when set to permanent

[lucymtc]

Description of the Change

When using a tool like Safe Redirect Manager users can set the status code of the redirect to 301, in this case the redirect should be permanent.
The status code could be set to other values from the plugin, this would be a different case as NextJS redirect only supports accepts permanent: true|false

This fix at least allows some level of control from Safe Redirect Manager or other redirect plugins.

How to test the Change

• Run WP with Safe Redirect Manager plugin.
• Add a redirect with status code 301
• Go to the front end and check in Network tab the redirect is 308 which is the equivalent of the 301 permanent redirect.
• Change status to 307 in Safe Redirect Manager and check in the front end the redirect is now 307 temp redirect

Changelog Entry

Added - New feature
Changed - Existing functionality
Deprecated - Soon-to-be removed feature
Removed - Feature
Fixed - Bug fix
Security - Vulnerability

Credits

Props @username, @username2, ...

Checklist:

• I agree to follow this project's Code of Conduct.
• I have updated the documentation accordingly.
• I have added tests to cover my change.
• All new and existing tests pass.

[changeset-bot]

🦋 Changeset detected

Latest commit: 7f78556

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@headstartwp/next	Patch

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Name	Status	Preview	Updated (UTC)
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