Always show chapter download indicators

- Local chapters are just always "downloaded", but you can't delete them from the app
- Unavailable sources show proper state so long as it's stubbed with the name still, but
  you can't download anything new

app/src/main/java/eu/kanade/presentation/manga/components/MangaChapterListItem.kt

@@ -203,15 +203,13 @@ fun MangaChapterListItem(
                     }
                 }
 
-                if (onDownloadClick != null) {
-                    ChapterDownloadIndicator(
-                        enabled = downloadIndicatorEnabled,
-                        modifier = Modifier.padding(start = 4.dp),
-                        downloadStateProvider = downloadStateProvider,
-                        downloadProgressProvider = downloadProgressProvider,
-                        onClick = onDownloadClick,
-                    )
-                }
+                ChapterDownloadIndicator(
+                    enabled = downloadIndicatorEnabled,
+                    modifier = Modifier.padding(start = 4.dp),
+                    downloadStateProvider = downloadStateProvider,
+                    downloadProgressProvider = downloadProgressProvider,
+                    onClick = { onDownloadClick?.invoke(it) },
+                )
             }
         }
     }