feat: [DHIS2-21941] Self contained changelog widget

[henrikmv]

DHIS2-21941

Reason behind this initiative: The fourth implementation of the Changelog, introduced in #4657, highlighted the need to make it easier to reuse.

This PR makes changelog widgets self-contained by removing the entityData / eventData / trackedEntityData props that were passed down from parent components. Instead, the changelog now fetches current entity values directly from the tracker API via a new useCurrentEntityValues hook.

Key changes

• New useCurrentEntityValues hook — fetches current values from tracker/events/{id} or tracker/trackedEntities/{id}, replacing the prop-based approach.

• Improved isLatestValue detection — previously compared change.currentValue against a prop-provided snapshot. Now validates against both the newest changelog entry per field and fresh API data.

• Centralized removeChangelogQueries — extracts duplicated cache invalidation into a shared utility, and adds invalidation for two new mutation sites: CompletionMenuItem and SkipAction.

• Opening the changelog now fires one extra tiny tracker/{events|trackedEntities}/{id}?fields=…[…,value] fetch, but it runs in parallel with the (slower) changelog list request, is cached with staleTime: Infinity so reopens are free, and is skipped entirely for changelogs without FILE_RESOURCE/IMAGE fields. In return, the widget becomes fully self-contained — no more entityData prop drilled from three different-shaped parent sources, and no more fragile ?.value hack that silently broke on stale parent caches.

[github-actions]

🚀 Deployed on https://deploy-preview-4690.capture.netlify.dhis2.org

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[simonadomnisoru]

Good job! 👏