feat: combine value + segment change requests for versioned environments

[kyle-ssg]

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• [x] I have added information to docs/ if required so people know about the feature!
• [x] I have filled in the "Changes" section below?
• [x] I have filled in the "How did you test this code" section below?
• [x] I have used a Conventional Commit title for this Pull Request

Changes

This allows segment and environment changes to be created under 1 change requests for versioned environments.

How did you test this code?

Created change requests changing both the value and the segment overrides and individually.