feat(#775): support function-based target subtitles

[Edwin-Rugoogamu]

Description

Code review checklist

• UI/UX backwards compatible: Test it works for the new design (enabled by default). And test it works in the old design, enable can_view_old_navigation permission to see the old design. Test it has appropriate design for RTL languages.
• Readable: Concise, well named, follows the style guide, documented if necessary.
• Documented: Configuration and user documentation on cht-docs
• Tested: Unit and/or e2e where appropriate
• Internationalised: All user facing text
• Backwards compatible: Works with existing data and configuration or includes a migration. Any breaking changes documented in the release notes.

License

The software is provided under AGPL-3.0. Contributions to this project are accepted under the same license.

[dianabarsan]

@Edwin-Rugoogamu this is not what we discussed, adding two subtitles.
We discussed making target.subtitle_translation_key be a function.

So this would be something like:

target.subtitle_translation_key(reportingPeriodFilter) | translate

[Edwin-Rugoogamu]

@dianabarsan Thankyou for the feedback. let me adjust it .

[dianabarsan]

This still doesn't cover what we need to do here. The situation now is that you're not even using the subtitleKey that is configured.

What needs to change here is that subtitleKey will be a function!
So you'll need to do something like:

return typeof subtitleKey === 'function' ? subtitleKey(reportingPeriod) : subtitleKey;

[Edwin-Rugoogamu]

@dianabarsan Thankyou for the feedback. We had a meeting with Josh and Team . This elaborated more on what we need to achieve. So it made it clear for me and erased the confusion i was having. So am adjusting and will send a PR for review.