fix: support imports of form dist/*

[boopathi]

fix #241

Allow the following imports - it was possible until #226 where we moved the output dirs.

// index.js

require("graphql-jit/dist/error");
require("graphql-jit/dist/error.js");

// index.mjs

import "graphql-jit/dist/error";
import "graphql-jit/dist/error.js";

[trkohler]

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[nabeelbukhari]

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