ESLint doesn't validate schema for built-in rules

[mdjermanovic]

Tell us about your environment

• ESLint Version: v7.12.0
• Node Version: v6.14.6
• npm Version: v12.18.4

What parser (default, @babel/eslint-parser, @typescript-eslint/parser, etc.) are you using?

default

Please show your full configuration:

Configuration

module.exports = {
  rules: {
    "accessor-pairs": ["error", { foo: 1 }]
  }
};

What did you do? Please include the actual source code causing the issue, as well as the command that you used to run ESLint.

// anything, the config is important

npx eslint index.js

What did you expect to happen?

Configuration error for accessor-pairs rule.

What actually happened? Please include the actual, raw output from ESLint.

No errors.

Are you willing to submit a pull request to fix this bug?

eslint/eslintrc#14