ESM-mode default import does not resolve to old DT packages with no `"types"` field

[andrewbranch]

Bug Report

Reported in DefinitelyTyped/DefinitelyTyped#60592

// @module: nodenext

// @Filename: /node_modules/@types/dedent/package.json
{ "name": "@types/dedent", "version": "1.0.0", "main": "" }

// @Filename: /node_modules/@types/dedent/index.d.ts
export {};

// @Filename: /index.mts
import dedent from "dedent";

Expected: import in index.mts resolves
Actual: Cannot find module 'dedent' or its corresponding type declarations.