test(client-preset): custom suffix with `namingConvention`

Description

When handling anonymous operation name, BaseDocumentsVisitor calls the convertName() method twice. This leads to duplicated suffix if a user provide a custom namingConvention function.

Related #10012

Type of change

[x] Bug fix (non-breaking change which fixes an issue)

Screenshots/Sandbox (if appropriate/relevant):

https://stackblitz.com/edit/gql-codgen-13f1zd

How Has This Been Tested?

I have described the problem in the related issue. The test added in this PR will reflect that.

Test Environment:

OS: Linux 6.8 Fedora Linux 40 (Workstation Edition)
NodeJS: 20.14.0
graphql version: 16.8.2
@graphql-codegen/cli version: 5.0.2

Checklist:

[x] I have followed the CONTRIBUTING doc and the style guidelines of this project
[x] I have performed a self-review of my own code
[ ] I have commented my code, particularly in hard-to-understand areas
[ ] I have made corresponding changes to the documentation
[x] My changes generate no new warnings
[x] I have added tests that prove my fix is effective or that my feature works
[x] New and existing unit tests pass locally with my changes
[ ] Any dependent changes have been merged and published in downstream modules

Further comments

The main problem that I want to address is that the operation name does not match with itself inside Typed Document Node.

dotansimha / graphql-code-generator

test(client-preset): custom suffix with `namingConvention` #10013