Spike: investigate removing src from pf npm packages

currently, the various packages published to npm pf-react all include the src directories which bloat the published pkg size to 6.05 MB https://www.npmjs.com/package/@patternfly/react-core?activeTab=code

it also does create scenarios where products could be importing from our src directories, then their own custom typescript configurations will result in compiled typescript different than the PF distributions. (and possibly build errors for the product)

Would it be possible to remove the src from the pf packages without requiring further breaking changes from the pf packages? If so, this could be possibly framed as a bug fix. That's the goal of this spike.

Jira Issue: PF-26

まず、pf-react パッケージがどのように公開されているかを調査し、npm の内容、特に含まれている src ディレクトリを比較します。src を削除すると既存の import やカスタム TypeScript 設定に影響するかを確認します。実現可能性、互換性リスク、必要なパッケージ変更を文書化できれば完了です。