Make sure all the TypeScript types are valid from both CJS and ESM

[benjie]

https://arethetypeswrong.github.io/?p=postgraphile%405.0.0-beta.6

ref https://blog.isquaredsoftware.com/2023/08/esm-modernization-lessons/

CJS default export
CommonJS module simulates a default export with exports.default and exports.__esModule, but does not also set module.exports for compatibility with Node. Node, and some bundlers under certain conditions, do not respect the __esModule marker, so accessing the intended default export will require a .default property access on the default import.