Metadata 4.7 updates for poodle/mds

[svogt0511]

Purpose

Changes to poodle/mds as required for the Metadata 4.7 release, described in the document at the link, below.

[Metadata Schema Release 4.7 - Product Spec](https://docs.google.com/document/d/1FbxB0vfMpKXsOIWc0x0yEoUuAn45iLqw60jUpSCl9Lg/edit?tab=t.0

closes: Add github issue that originated this PR

Approach

Open Questions and Pre-Merge TODOs

Learning

Types of changes

• Bug fix (non-breaking change which fixes an issue)

• New feature (non-breaking change which adds functionality)

• Breaking change (fix or feature that would cause existing functionality to change)

Reviewer, please remember our guidelines:

• Be humble in the language and feedback you give, ask don't tell.
• Consider using positive language as opposed to neutral when offering feedback. This is to avoid the negative bias that can occur with neutral language appearing negative.
• Offer suggestions on how to improve code e.g. simplification or expanding clarity.
• Ensure you give reasons for the changes you are proposing.