chore(ci): always build docs

[TomAFrench]

Description

Problem*

Resolves

Summary*

This PR splits building and deploying a preview of the docs. This should enforce that docs are always ready to be published without generating a large number of unnecessary deploys.

Additional Context

Documentation*

Check one:

• No documentation needed.
• Documentation included in this PR.
• [Exceptional Case] Documentation to be submitted in a separate PR.

PR Checklist*

• I have tested the changes locally.
• I have formatted the changes with Prettier and/or cargo fmt on default settings.

[TomAFrench]

@kevaundray Could you add this new build step as a required check? We should ensure that the docs always build.

[kevaundray]

@TomAFrench You should be able to add these required checks now