Bug Report for range-sum-query-2d-immutable

Bug Report for https://neetcode.io/problems/range-sum-query-2d-immutable

Default template for golang contains `package main` in first line

<img width="1393" height="1054" alt="Image" src="https://github.com/user-attachments/assets/555cd280-c511-4ae3-965c-740ef0691b18" />