Support Grand calculated summary as a value source

[katie-gardner]

What is the context of this PR?

This PR adds support for using Grand Calculated Summaries as value sources. Similar to calculated summaries this is done with a value source of the form

{
   source: "grand_calculated_summary",
   identifier: "grand-calculated-summary-block-id"
}

grand_calculated_summary has been added as a valid value source, and validation has been added to ensure that any such value source is a valid grand calculated summary id. It corrects an existing issue in which a calculated summary value source would be marked as valid if there are no calculated summaries in the schema.

Some minor refactoring was done alongside supporting the GCS value source as multiple places were using the same approach to get answer ids relevant to a value sources.

Due to the need for checking this is valid within a repeating section this PR sits on top of the PR for grand-calculated-summary-repeating-sections It will only be merged in after the other PR.

The corresponding runner PR makes use of this

Note

Made the PR for merge into main so that the test suite would run and pass and have now pointed it at GCS-repeating-sections for ease of review, will point it back to main before merge

How to review

Check that the updated schemas cover grand calculated summary value sources in repeats/outside repeats/ piping/ logic and that the updates to the schema json are correct. Ensure only valid grand calculated summary ids can be used in value sources.

Checklist

• eq-translations updated to support any new schema keys which need translation

[katie-gardner]

Grand Calculated Summary: Ability to use as a Value source (3 SP)