Summary

Clarify the conditional exports docs by recommending node/default for packages that need a Node-specific entry point plus a fallback for other runtimes.

Context

The current docs explain the hazards around "import" and "require", but the dual-package section only pointed at the examples repo. This adds a concrete node/default example directly in the docs.

Fixes #52174

Changes

• Add a short recommendation near the conditional exports section.
• Expand the dual CommonJS/ES module packages section with a node/default example.

Testing

Ran:

make lint-md

Result: failed in this sandbox because npm could not reach registry.npmjs.org (ENOTFOUND).

Ran:

git diff --check

Result: passed.