Refactor: Optimize News Adapter and Fix Build Failures

Refactor: Optimize News Adapter Performance

- Created `NewsItem` data class to act as a presentation model for the news feed.
- Implemented `NewsItemMapper` to map `RealmNews` objects to `NewsItem` objects, moving JSON parsing and other expensive operations to a background coroutine.
- Refactored `AdapterNews` to use `NewsItem`, removing all JSON parsing from `onBindViewHolder`.
- Updated `NewsFragment`, `ReplyActivity`, and `DiscussionListFragment` to use the new `NewsItemMapper` and `NewsItem` data class.

Fix: Address build failure and regressions in news adapter refactor

This commit fixes several issues introduced in the initial refactoring of the news adapter:

- **Fixes Build Failure:** Resolves a Kotlin compiler internal error by updating the `setData` and `showReply` method signatures in `BaseNewsFragment` and `BaseTeamFragment` to match the new `NewsItem` data model, correcting the inheritance mismatch.
- **Fixes Functional Regression:** Re-implements the image download logic in `NewsFragment` that was accidentally removed, ensuring that images associated with news items are downloaded and displayed correctly.
- **Fixes UI Thread Blocking:** Replaces a synchronous `executeTransaction` call in `AdapterNews` with a non-blocking, lifecycle-aware coroutine to prevent blocking the UI thread when fetching data for labels.
- **Fixes Compilation Error:** Corrects a type mismatch in the `deletePost` call within the `AdapterNews` click listener.

This change addresses a performance bottleneck in the news feed, improving scrolling performance and overall user experience, while also ensuring the stability and functionality of the application.

Author: google-labs-jules[bot]

app/src/main/java/org/ole/planet/myplanet/ui/team/BaseTeamFragment.kt

@@ -13,9 +13,9 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import org.ole.planet.myplanet.base.BaseNewsFragment
 import org.ole.planet.myplanet.model.RealmMyTeam
-import org.ole.planet.myplanet.model.RealmNews
 import org.ole.planet.myplanet.model.RealmUserModel
 import org.ole.planet.myplanet.repository.TeamRepository
+import org.ole.planet.myplanet.ui.news.NewsItem
 
 private val Realm.isOpen: Boolean
     get() = !isClosed
@@ -50,7 +50,7 @@ abstract class BaseTeamFragment : BaseNewsFragment() {
         loadTeamData()
     }
 
-    override fun setData(list: List<RealmNews?>?) {}
+    override fun setData(list: List<NewsItem>?) {}
 
     private fun loadTeamData() {
         val shouldQueryTeam = shouldQueryTeamFromRealm()