fix: hide compute class request scaler value from api output (2429)

[keyallis]

2429

We want to hide the requestScaler value from the output of api calls on ComputeClass fields. This PR separates the objects used for storing ComputeClassMemory from the objects that are returned via the api.

Checklist

• [ ] The title of this PR would make a good line in Acorn's Release Note's Changelog
• [ ] The title of this PR ends with a link to the main issue being address in parentheses, like: This is a title (#1216). Here's an example
• [ ] All relevant issues are referenced in the PR description. NOTE: don't use GitHub keywords that auto-close issues
• [ ] Commits follow contributing guidance
• [ ] Automated tests added to cover the changes. If tests couldn't be added, an explanation is provided in the Verification and Testing section
• [ ] Changes to user-facing functionality, API, CLI, and upgrade impacts are clearly called out in PR description
• [ ] PR has at least two approvals before merging (or a reasonable exception, like it's just a docs change)