fix(core): custom 404 page not rendering

[deini]

What/Why?

Fixes an issue with our custom 404 page not being used.

Testing

CI

Closes: #956

[changeset-bot]

🦋 Changeset detected

Latest commit: a0c7d55

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

This PR includes changesets to release 1 package

Name	Type
@bigcommerce/catalyst-core	Patch

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[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
catalyst-latest	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 30, 2024 4:56pm
catalyst-ppr	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 30, 2024 4:56pm

4 Ignored Deployments

Name	Status	Preview	Comments	Updated (UTC)
catalyst-1millionproducts-store	⬜️ Ignored (Inspect)			May 30, 2024 4:56pm
catalyst-au	⬜️ Ignored (Inspect)			May 30, 2024 4:56pm
catalyst-test-store	⬜️ Ignored (Inspect)			May 30, 2024 4:56pm
catalyst-uk	⬜️ Ignored (Inspect)			May 30, 2024 4:56pm

[github-actions]

⚡️🏠 Lighthouse report

Lighthouse ran against https://catalyst-latest-enwxqvdld-bigcommerce-platform.vercel.app

🖥️ Desktop

We ran Lighthouse against the changes on a desktop and produced this report. Here's the summary:

Category	Score
🟢 Performance	100
🟢 Accessibility	100
🟢 Best practices	100
🟢 SEO	90

📱 Mobile

We ran Lighthouse against the changes on a mobile and produced this report. Here's the summary:

Category	Score
🟢 Performance	98
🟢 Accessibility	100
🟢 Best practices	100
🟢 SEO	92