Revert screen recomposition fixes

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/TimelinePresenter.kt

@@ -51,7 +51,6 @@ import io.element.android.libraries.matrix.api.core.asEventId
 import io.element.android.libraries.matrix.api.room.JoinedRoom
 import io.element.android.libraries.matrix.api.room.powerlevels.permissionsAsState
 import io.element.android.libraries.matrix.api.room.roomMembers
-import io.element.android.libraries.matrix.api.timeline.MatrixTimelineItem
 import io.element.android.libraries.matrix.api.timeline.ReceiptType
 import io.element.android.libraries.matrix.api.timeline.Timeline
 import io.element.android.libraries.matrix.api.timeline.item.event.TimelineItemEventOrigin
@@ -255,25 +254,15 @@ class TimelinePresenter(
                 }
                 .launchIn(this)
 
-            var previousItems: List<MatrixTimelineItem>? = null
             combine(timelineController.timelineItems(), room.membersStateFlow) { items, membersState ->
-                val roomMembers = membersState.roomMembers().orEmpty()
-                if (previousItems !== items) {
-                    previousItems = items
                 val parent = analyticsService.getLongRunningTransaction(DisplayFirstTimelineItems)
                 val transaction = parent?.startChild("timelineItemsFactory.replaceWith", "Processing timeline items")
                 transaction?.putExtraData(AnalyticsUserData.TIMELINE_ITEM_COUNT, items.count().toString())
                 timelineItemsFactory.replaceWith(
                     timelineItems = items,
-                        roomMembers = roomMembers
+                    roomMembers = membersState.roomMembers().orEmpty()
                 )
                 transaction?.finish()
-                } else {
-                    timelineItemsFactory.updateRoomMembers(
-                        timelineItems = items,
-                        roomMembers = roomMembers
-                    )
-                }
                 items
             }
                 .onEach(redactedVoiceMessageManager::onEachMatrixTimelineItem)

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/factories/TimelineItemsFactory.kt

@@ -72,45 +72,6 @@ class TimelineItemsFactory(
         }
     }
 
-    /**
-     * Lightweight update that only refreshes member-derived data (e.g., read receipt display names)
-     * on cached items without rebuilding the diff cache or creating new items.
-     * Skips emission if no cached items have member-dependent state.
-     */
-    suspend fun updateRoomMembers(
-        timelineItems: List<MatrixTimelineItem>,
-        roomMembers: List<RoomMember>,
-    ) = withContext(dispatchers.computation) {
-        lock.withLock {
-            var hasUpdates = false
-            val updatedStates = ArrayList<TimelineItem>()
-            for (index in diffCache.indices().reversed()) {
-                val cacheItem = diffCache.get(index)
-                if (cacheItem is TimelineItem.Event && roomMembers.isNotEmpty()) {
-                    val updatedItem = eventItemFactory.update(
-                        timelineItem = cacheItem,
-                        receivedMatrixTimelineItem = timelineItems[index] as MatrixTimelineItem.Event,
-                        roomMembers = roomMembers
-                    )
-                    diffCache[index] = updatedItem
-                    hasUpdates = true
-                    updatedStates.add(updatedItem)
-                } else if (cacheItem != null) {
-                    updatedStates.add(cacheItem)
-                } else {
-                    buildAndCacheItem(timelineItems, index, roomMembers)?.also { timelineItemState ->
-                        updatedStates.add(timelineItemState)
-                    }
-                }
-            }
-            if (hasUpdates) {
-                val result = timelineItemGrouper.group(updatedStates).toImmutableList()
-                val filteredResult = filterEmptyDaySeparators(result)
-                _timelineItems.emit(filteredResult)
-            }
-        }
-    }
-
     private suspend fun buildAndEmitTimelineItemStates(
         timelineItems: List<MatrixTimelineItem>,
         roomMembers: List<RoomMember>,