Fix `type()` function returning `any` instead of preserving types

[yamcodes]

The type() function from arkenv always returns any when wrapping type definitions, which breaks type inference.

Current behavior:

import arkenv, { type } from "arkenv";

const env = arkenv({
  TURSO_DATABASE_URL: type("string.url"), // types as 'any' instead of 'string'
});

Expected behavior:
The type() function should preserve the underlying type, so type("string.url") should result in a string type (not any).

Impact:

• Users lose type safety when using type() wrapper
• Forces workarounds like type assertions or importing type from arktype directly
• Only affects Bun, this does not happen in Node

Root cause identified: This issue occurs when tsconfig.json uses module: "commonjs". See #378 for the consolidated issue.

Related:

• Issue Question: How to type URLs? #374 (original question)
• Issue TypeScript type errors when using moduleResolution: "Node10" or "Node" in tsconfig #378 (root cause - TypeScript type errors with module: "commonjs")

[yamcodes]

Closed as a symptom of #378. This isn't a Bun specific issue after all.