fix errors and beautify with use of class

back/db/message/updateMessage-db.ts

@@ -19,7 +19,7 @@ export async function deleteFlag(messageId: number, flagId: number) {
 
 export async function updateMailboxSeen(messageId: number, isSeen: boolean) {
     const query = `UPDATE mailbox_message SET seen = ? WHERE message_id = ?`;
-    const values = [messageId, isSeen];
+    const values = [isSeen, messageId];
     return await execQueryAsync(query, values);
 }