[Refactor] Declarative construction of config info body

[gonzaloriestra]

WHY are these changes introduced?

The formatConfigInfoBody function used an imperative style with multiple push, unshift calls, and a for loop to build its output. Refactoring it to a declarative style makes the code more readable and maintainable.

WHAT is this pull request doing?

• Replaces imperative array construction of the items list with a declarative array literal using spread syntax.
• Replaces the for loop used for processing messages with a flatMap call.
• Maintains exact string formatting and separator logic (verified by existing tests).

How to test your changes?

CI

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes
• I've considered analytics changes to measure impact
• The change is user-facing — I've identified the correct bump type (patch for bug fixes · minor for new features · major for breaking changes) and added a changeset with pnpm changeset add

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PR created automatically by Jules for task 7394684360109543773 started by @gonzaloriestra

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