Fix History not being added when restoring backup (#7324)

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

@@ -311,10 +311,12 @@ class FullBackupManager(context: Context) : AbstractBackupManager(context) {
                 handler
                     .awaitOneOrNull { chaptersQueries.getChapterByUrl(url) }
                     ?.let {
+                        toUpdate.add(
                             HistoryUpdate(
                                 chapterId = it._id,
                                 readAt = Date(lastRead),
                                 sessionReadDuration = 0,
+                            ),
                         )
                     }
             }