@nx/eslint-plugin should ignore .nx folder globally

[ardokirsipuu]

Current Behavior

Currently the @nx/eslint-plugin has the .nx folder ignored non-globally.

Read here what I mean with global vs non-global ignores: https://eslint.org/docs/latest/use/configure/configuration-files#globally-ignoring-files-with-ignores

https://github.com/nrwl/nx/blob/master/packages/eslint-plugin/src/flat-configs/base.ts:

export default [
  {
    plugins: {
      get ['@nx']() {
        return require('../index');
      },
    },
    ignores: ['.nx'],
  },
];

Expected Behavior

Expecting the .nx folder to be ignored globally, for example:

export default [
  {
    plugins: {
      get ['@nx']() {
        return require('../index');
      },
    },
  },
  {
    ignores: ['.nx'], // <-- in its own config object with only the `ignores` key specified
  },
];

GitHub Repo

No response

Steps to Reproduce

1. Create some sorts of monorepo workspace which has eslint set up, e.g. npx create-nx-workspace@latest with these answers:
   
2. Run npx nx run org:build to generate some content to the .nx folder
3. Run npx eslint and see all the linting errors for .nx folder's contents

Nx Report

Node           : 22.13.1
OS             : win32-x64
Native Target  : x86_64-windows
npm            : 10.9.2

nx                     : 20.3.3
@nx/js                 : 20.3.3
@nx/jest               : 20.3.2
@nx/eslint             : 20.3.3
@nx/workspace          : 20.3.3
@nx/devkit             : 20.3.3
@nx/eslint-plugin      : 20.3.3
@nx/module-federation  : 20.3.3
@nx/next               : 20.3.3
@nx/react              : 20.3.3
@nx/web                : 20.3.3
@nx/webpack            : 20.3.3
typescript             : 5.6.3
---------------------------------------
Registered Plugins:
@nx/next/plugin
@nx/jest/plugin
@nx/eslint/plugin
---------------------------------------

Failure Logs

✖ 18100 problems (17528 errors, 572 warnings)
  6734 errors and 1 warning potentially fixable with the `--fix` option.

Package Manager Version

No response

Operating System

• macOS
• Linux
• Windows
• Other (Please specify)

Additional Information

I hope Nx does not prohibit the usage of eslint outside of packages/libs/apps 👀