fix: prevent ContinueWatching LazyRow from starting scrolled to middle

Removing the item key disables Compose's scroll anchoring, which was
shifting the scroll offset rightward whenever a refresh prepended new
items, making the list appear to start in the middle.

app/src/main/java/hu/bbara/purefin/app/home/ui/HomeSections.kt

@@ -63,8 +63,7 @@ fun ContinueWatchingSection(
         contentPadding = PaddingValues(horizontal = 16.dp),
         horizontalArrangement = Arrangement.spacedBy(16.dp)
     ) {
-        items(
-            items = items, key = { it.id }) { item ->
+        items(items = items) { item ->
             ContinueWatchingCard(
                 item = item,
                 onMovieSelected = onMovieSelected,