how to limit the amount of the alias

### What happened?
I can't limit the amount of the alias. FixedComplexityLimit limits the complexity of the query.

### What did you expect?
I want to limit the amount of the alias to prevent the batching attack. Let's try to explain by giving an example.

```
query {
productsByIds(productIds: "353573855") {
active {
id
path
title
}
productsByIds2: productsByIds(productIds: "353573855") {
active {
id
path
title
}
}

```

The above query should give an error. However, the below should work. This is just an example I have more complex schemas that's why the complexity limit didn't work for me.

```
query {
productsByIds(productIds: "353573855") {
active {
id
path
title
}
products {
active {
id
path
title
}
}
}
```
### Minimal graphql.schema and models to reproduce

### versions
- `go run github.com/99designs/gqlgen version` v0.17.22
- `go version` 1.19

查看 gqlgen 库中的查询复杂度计算，可能位于验证或执行阶段。该 issue 涉及限制每个查询中的别名数量，以防止 batching 攻击。首先了解 AST 中别名的解析和计数方式。检查 FixedComplexityLimit 等现有的复杂度限制器，参考其中的模式。使用提供的查询示例编写测试即可验证修复。

由索引模型根据 Issue 内容生成。