[MM-57991] Add log message about deleted rows from Data Retention job (#26847)

server/channels/store/store.go

@@ -751,7 +751,7 @@ type ReactionStore interface {
 	DeleteAllWithEmojiName(emojiName string) error
 	BulkGetForPosts(postIds []string) ([]*model.Reaction, error)
 	GetSingle(userID, postID, remoteID, emojiName string) (*model.Reaction, error)
-	DeleteOrphanedRowsByIds(r *model.RetentionIdsForDeletion) error
+	DeleteOrphanedRowsByIds(r *model.RetentionIdsForDeletion) (int64, error)
 	PermanentDeleteBatch(endTime int64, limit int64) (int64, error)
 	PermanentDeleteByUser(userID string) error
 }