feat: add sortableAttributes for createdAt/updatedAt in Meilisearch indexes

[mac-eochaidh]

Summary

Adds sortableAttributes configuration to MeiliSearch indexes for createdAt and updatedAt fields. This enables chronological sorting of conversations and messages in both ascending and descending order. The change includes comprehensive test coverage with unit tests for settings configuration verification and integration tests that validate sorting functionality.

Change Type

• 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 not work as expected)
• This change requires a documentation update
• Translation update

Testing

Unit tests and integration tests verify the sortableAttributes configuration.

Test Configuration:

cd packages/data-schemas
npx jest mongoMeili.spec.ts mongoMeili.integration.spec.ts

Tests include:

• Unit tests verifying updateSettings is called with correct sortableAttributes and filterableAttributes
• Integration tests validating sorting by createdAt/updatedAt in asc and desc directions
• Tests confirming filterableAttributes (user) continues to work alongside sortableAttributes

Checklist

• My code adheres to this project's style guidelines
• I have performed a self-review of my own code
• I have commented in any complex areas of my code
• I have made pertinent documentation changes
• My changes do not introduce new warnings
• I have written tests demonstrating that my changes are effective or that my feature works
• Local unit tests pass with my changes
• Any changes dependent on mine have been merged and published in downstream modules.
• A pull request for updating the documentation has been submitted.