`add` plugin ignores index.ts when using client present

[simPod]

Which packages are impacted by your issue?

@graphql-codegen/add

Describe the bug

add plugin should add eslint-disable to generated files

graphql-code-generator/packages/presets/client/src/index.ts

Line 215 in 5724234

{ [`add`]: { content: `/* eslint-disable */` } },

it does so except for index.ts

All files except index.ts has /* eslint-disable */ added to them

Your Example Website or App

See bellow

Steps to Reproduce the Bug or Issue

• Run generate with config specified bellow
• open generated index.ts

Expected behavior

/* eslint-disable */
export * from "./fragment-masking";
export * from "./gql";

Screenshots or Videos

No response

Platform

• OS: macos

• NodeJS: 22

• graphql version: 16.3

  "@graphql-codegen/add": "^5.0.3",
  "@graphql-codegen/cli": "^5.0.3",
  "@graphql-codegen/client-preset": "^4.5.1",
  "@graphql-codegen/fragment-matcher": "^5.0.2",
  "@graphql-codegen/typescript": "^4.1.2",
  "@graphql-codegen/typescript-document-nodes": "^4.0.12",
  "@graphql-codegen/typescript-operations": "^4.4.0",
  "@graphql-codegen/typescript-react-apollo": "^4.3.2",

Codegen Config File

const config: CodegenConfig = {
  documents: 'src/**/*.graphql',
  generates: {
    './src/gql/': {
      preset: 'client',
    },
  },
  overwrite: true,
  schema: '../schema.graphqls',
  watch: false,
};

Additional context

No response

[kambing86]

should just let us define the plugin add to overwrite the default one