fix time geneate logic and replace default datetime by luxon

src/Message/message.schema.ts

@@ -32,7 +32,7 @@ export class MessageSchema extends PothosSchema {
           description: 'The ID of the chat room.',
         }),
         message: t.expose('message', {
-          // eslint-disable-next-line @typescript-eslint/no-explicit-any
+          // biome-ignore lint/suspicious/noExplicitAny: <explanation>
           type: 'Json' as any,
           description: 'The message content.',
         }),