- Introduced `mapper_test.go` to validate the functionality of backfilling notice location details from the buyer organization.
- Implemented two test cases: one to ensure the location fields are correctly populated from the buyer when they are empty, and another to verify that existing values are not overwritten.
- Enhanced the `mapper.go` file by adding the `backfillNoticeLocationFromBuyer` function to facilitate this logic.
This update improves the reliability of notice data handling within the tender management system by ensuring accurate location information is maintained.