No need to filter top tile out

Signed-off-by: RMidhunSuresh <hi@midhun.dev>

src/domain/session/room/timeline/TimelineViewModel.js

@@ -97,7 +97,7 @@ export class TimelineViewModel extends ViewModel {
             const endIndex = this._tiles.getTileIndex(this._endTile);
             for (const tile of this._tiles.sliceIterator(startIndex, endIndex + 1)) {
                 const ret = tile.notifyVisible();
-                if (ret && !tile.isAtTop) {
+                if (ret) {
                     this.watchForGapFill(ret, tile);
                 }
             }