Nested arrays of custom types being parsed incorrectly

### Before opening, please confirm:

- [x] I have installed the latest version of the Amplify CLI (see above), and confirmed that the issue still persists.
- [x] I have [searched for duplicate or closed issues](https://github.com/aws-amplify/amplify-codegen/issues?q=is%3Aissue+).
- [x] I have read the guide for [submitting bug reports](https://github.com/aws-amplify/amplify-codegen/blob/main/CONTRIBUTING.md#bugs).
- [x] I have done my best to include a minimal, self-contained set of instructions for consistently reproducing the issue.

### How did you install the Amplify CLI?

npm

### If applicable, what version of Node.js are you using?

v20.12.1

### Amplify CLI Version

12.14.2

### What operating system are you using?

Mac

### Amplify Codegen Command

codegen

### Describe the bug

Generated types of nested arrays of a custom type are not correct.

Say I have this in my `schema.graphql`
```graphql
type Foo {
nestedArray: [[Bar!]!]!
}

type Bar {
bool: Boolean
}
```

and I run amplify codegen, I get the following in API.ts

```ts

export type Foo = {
nestedArray: Array<{
__typename: "Bar";
bool?: boolean | null;
}>;
}

export type Bar = {
__typename: "Bar";
bool?: boolean | null;
};
```

### Expected behavior

```ts

export type Foo = {
nestedArray: Array< Array<{
__typename: "Bar";
bool?: boolean | null;
}> >;
}

export type Bar = {
__typename: "Bar";
bool?: boolean | null;
};
```

### Reproduction steps

1. Add this to schema.graphql
```graphql
type Foo {
nestedArray: [[Bar!]!]!
}

type Bar {
bool: Boolean
}
```
2. Run `amplify codegen`
3. See generated types in API.ts

### GraphQL schema(s)

```graphql
type Foo {
nestedArray: [[Bar!]!]!
}

type Bar {
bool: Boolean
}
```

### Log output

```
# Put your logs below this line

```

### Additional information

Nested arrays of primitive types are being generated fine. Running codegen on
```graphql
type Foo {
nestedArray: [[String!]!]!
}
```
I get
```ts
export type Foo = {
nestedArray: Array>;
}
```