feat!: mark @tutorialkit/react direct usage as experimental feature

docs/tutorialkit.dev/src/content/docs/reference/react-components.mdx

@@ -22,6 +22,13 @@ import sourceUseWebcontainer from "@components/react-examples/hooks/useWebcontai
 
 You can reuse TutorialKit's React components in your own applications. They are designed to work well with the [WebContainer API][webcontainers].
 
+:::note
+Using `@tutorialkit/react` package directly without `@tutorialkit/astro` is **experimental** at the moment.
+This package may introduce breaking changes in patch and minor version updates. Pay extra attention when updating the versions.
+
+We are planning to stabilize component API of `@tutorialkit/react` in future.
+:::
+
 Here's a simple editor that can be made with those components:
 
 <ExampleSimpleEditor client:load />