Fix backups and filtered scanlators

app/src/main/java/eu/kanade/tachiyomi/data/backup/full/models/BackupManga.kt

@@ -7,6 +7,7 @@ import eu.kanade.tachiyomi.data.database.models.MangaImpl
 import eu.kanade.tachiyomi.data.database.models.TrackImpl
 import eu.kanade.tachiyomi.data.library.CustomMangaManager
 import eu.kanade.tachiyomi.ui.reader.setting.ReadingModeType
+import exh.util.nullIfBlank
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.protobuf.ProtoNumber
 
@@ -129,7 +130,7 @@ data class BackupManga(
                 viewer = (manga.viewer.toInt() and ReadingModeType.MASK),
                 viewer_flags = manga.viewer.toInt(),
                 chapterFlags = manga.chapter_flags.toInt(),
-                filtered_scanlators = listOfStringsAndAdapter.encode(manga.filtered_scanlators.orEmpty()),
+                filtered_scanlators = listOfStringsAndAdapter.encode(manga.filtered_scanlators.orEmpty()).nullIfBlank(),
                 // SY -->
             ).also { backupManga ->
                 customMangaManager?.getManga(manga._id)?.let {

app/src/main/java/exh/debug/DebugFunctions.kt

@@ -375,4 +375,20 @@ object DebugFunctions {
             )
         }
     }
+
+    fun resetFilteredScanlatorsForAllManga() {
+        db.inTransaction {
+            db.lowLevel().executeSQL(
+                RawQuery.builder()
+                    .query(
+                        """
+                        UPDATE ${MangaTable.TABLE}
+                            SET ${MangaTable.COL_FILTERED_SCANLATORS} = NULL
+                        """.trimIndent(),
+                    )
+                    .affectsTables(MangaTable.TABLE)
+                    .build(),
+            )
+        }
+    }
 }