revert: "fix(chapter): Scanlator is nullable"

This reverts commit 0f44474.

Author: null2264

data/src/commonMain/sqldelight/tachiyomi/data/chapters.sq

@@ -91,7 +91,7 @@ UPDATE chapters SET
     manga_id = coalesce(:mangaId, manga_id),
     url = coalesce(:url, url),
     name = coalesce(:name, name),
-    scanlator = :scanlator,
+    scanlator = coalesce(:scanlator, scanlator),
     read = coalesce(:read, read),
     bookmark = coalesce(:bookmark, bookmark),
     last_page_read = coalesce(:lastPageRead, last_page_read),