fix: Export the Render type

[jerelmiller]

While creating a helper to render suspense hooks, I encountered a TypeScript error when trying to return takeRender from the helper (source):

Return type of exported function has or is using name 'Render' from external module "/home/circleci/project/node_modules/@testing-library/react-render-stream/dist/pure" but cannot be named.

This fixes the TypeScript issue as demonstrated in the patch.

[pkg-pr-new]

undefined https://pkg.pr.new/testing-library/react-render-stream-testing-library/@testing-library/react-render-stream@15

commit: 1b78067