fix: update error message for schedule overlap in OrderSchema

- Changed the error message thrown when a user has an overlapping schedule from "User has already registered for this service" to "User have overlap schedule" for improved clarity.
- This update aims to enhance user feedback during order processing, ensuring a better understanding of scheduling conflicts.

src/Order/order.schema.ts

@@ -429,7 +429,7 @@ export class OrderSchema extends PothosSchema {
             },
           });
           if (overlapSchedule) {
-            throw new Error("User has already registered for this service");
+            throw new Error("User have overlap schedule");
           }
           // check if input schedule has order id then throw error
           const schedule = await this.prisma.schedule.findUnique({