Clean up library download chapters logic

We can probably clean up the same logic in the manga controller at some point too, but that stuff's messy.
Also fixes the spacing issue that the new icon introduced.

(cherry picked from commit 33e90d6449)

# Conflicts:
#	app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt

app/src/main/java/eu/kanade/domain/SYDomainModule.kt

@@ -120,7 +120,7 @@ class SYDomainModule : InjektModule {
         addFactory { GetMergedManga(get()) }
         addFactory { GetMergedMangaById(get()) }
         addFactory { GetMergedReferencesById(get()) }
-        addFactory { GetMergedChapterByMangaId(get()) }
+        addFactory { GetMergedChapterByMangaId(get(), get(), get()) }
         addFactory { InsertMergedReference(get()) }
         addFactory { UpdateMergedSettings(get()) }
         addFactory { DeleteByMergeId(get()) }