fix: ssr not always working

[jasonbahl]

Description

This fixes a bug where the WordPressTemplate component would return null on the server when isPreview was null.

Related Issue(s):

fixes #1813

Testing

I tested following the steps outlined in #1813 on the reproduction mentioned in the issue.

I also was able to reproduce the issue on acf.wpgraphql.com (codebase here: https://github.com/wp-graphql/acf.wpgraphql.com) and was able to confirm that the issue is resolved for acf.wpgraphql.com with this fix in place.

Screenshots

Reproduction Site from #1813 - Before

With JavaScript disabled, the page is blank

Reproduction Site from #1813 - After

Content is rendered even with JavaScript disabled

acf.wpgraphql.com - Before

With JavaScript disabled, the page is blank

acf.wpgraphql.com - After

Content is rendered even with JavaScript disabled

[changeset-bot]

🦋 Changeset detected

Latest commit: e079433

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

This PR includes changesets to release 2 packages

Name	Type
@faustwp/core	Patch
@faustwp/cli	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

📦 Next.js Bundle Analysis for @faustwp/getting-started-example

This analysis was generated by the Next.js Bundle Analysis action. 🤖

🎉 Global Bundle Size Decreased

Page	Size (compressed)
global	250.52 KB (-10 B)

Details

The global bundle is the javascript bundle that loads alongside every page. It is in its own category because its impact is much higher - an increase to its size means that every page on your website loads slower, and a decrease means every page loads faster.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

If you want further insight into what is behind the changes, give @next/bundle-analyzer a try!

[josephfusco]

I was able to see this working on both the homepage and the upgrade guide with JavaScript turned off.