chore: centralize page node logic into a class

[benmccann]

Working some more towards #12580. It's proving really tricky to do. This will hopefully make it a bit easier by putting more of the code that needs to be updated into a single file vs having it spread across a few different ones

[changeset-bot]

⚠️ No Changeset found

Latest commit: b6fdfe9

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

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

[dummdidumm]

this makes sense regardless of the referenced issue - nice refactoring!