fix: export types explicitly

[ncalteen]

Before the change?

• When importing types into a TypeScript project, the latest release was causing a Module '"@octokit/graphql-schema"' has no exported member '<name>'. error.

import type { Reaction } from '@octokit/graphql-schema'

This error was experienced in a TypeScript project with the following configuration:

• Node.js v21.6.2
• TypeScript 5.4.3
• TSConfig:

{
  "$schema": "https://json.schemastore.org/tsconfig",
  "compilerOptions": {
    "baseUrl": "./",
    "declaration": true,
    "declarationMap": false,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "lib": ["ES2022"],
    "module": "NodeNext",
    "moduleResolution": "NodeNext",
    "newLine": "lf",
    "noImplicitAny": true,
    "noUnusedLocals": true,
    "noUnusedParameters": false,
    "pretty": true,
    "resolveJsonModule": true,
    "sourceMap": true,
    "strict": true,
    "strictNullChecks": true,
    "target": "ES2022",
    "verbatimModuleSyntax": true
  }
}

After the change?

• This attempts to resolve the error by explicitly importing and exporting types from schema.d.ts into index.d.ts

Pull request checklist

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)

Does this introduce a breaking change?

Please see our docs on breaking changes to help!

• Yes
• No

---

[github-actions]

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[github-actions]

🎉 This PR is included in version 15.4.1 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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