Refactor Prisma client usage and enhance service integration for improved connection management

src/modules/minglaradmin/services/amNotification.service.ts

@@ -1,10 +1,10 @@
 import { Injectable } from '@nestjs/common';
-import { PrismaService } from '../../../common/database/prisma.lambda.service';
+import { prismaClient } from '../../../common/database/prisma.lambda.service';
 import { sendAMEmailForHostAssign } from './AMEmail.service';
 
 @Injectable()
 export class AMNotificationService {
-  constructor(private prisma: PrismaService) {}
+  private prisma = prismaClient;
 
   /**
    * Fetch account manager email by id and send assignment email.