Only show view more card if row has more items (#1493)

## Description
Only show the view more card at the end of row if there are actually
more items (or at the limit).

Also reduces the size of the arrow a bit

### Related issues
Related to #1392 

### Testing
Emulator with different max items setting

## Screenshots
N/A

## AI or LLM usage
None

app/src/main/java/com/github/damontecres/wholphin/util/LoadingState.kt

@@ -67,6 +67,7 @@ sealed interface HomeRowLoadingState {
         val items: List<BaseItem?>,
         val viewOptions: HomeRowViewOptions = HomeRowViewOptions(),
         val rowType: HomeRowConfig? = null,
+        val showViewMore: Boolean = true,
     ) : HomeRowLoadingState
 
     data class Error(