esm: fix misleading error when import empty package.json

[himself65]

Fixes: https://github.com/nodejs/node/issues/49674

---

➜  node  /Users/himself65/Code/node/out/Debug/node -e 'import("whatever")'

node:internal/process/promises:394
    triggerUncaughtException(err, true /* fromPromise */);
    ^
Error: No package entry point defined for package 'file:///Users/himself65/Code/xxx/node_modules/whatever/package.json' imported from xxx/src/index.ts
    at legacyMainResolve (node:internal/modules/esm/resolve:207:26)
    at packageResolve (node:internal/modules/esm/resolve:826:14)
    at moduleResolve (node:internal/modules/esm/resolve:908:18)
    at defaultResolve (node:internal/modules/esm/resolve:1038:11)
    at nextResolve (node:internal/modules/esm/hooks:748:28)
    at resolve (file:///Users/himself65/Applications/WebStorm.app/Contents/plugins/nodeJS/js/ts-file-loader/node_modules/tsx/dist/esm/index.mjs?1726363031016:2:3893)
    at nextResolve (node:internal/modules/esm/hooks:748:28)
    at Hooks.resolve (node:internal/modules/esm/hooks:240:30)
    at handleMessage (node:internal/modules/esm/worker:199:24)
    at Immediate.checkForMessages (node:internal/modules/esm/worker:141:28) {
  code: 'ERR_MODULE_NOT_FOUND'
}

Node.js v23.0.0-pre

Process finished with exit code 1