fix(astro): work-around for dev-mode's `ReferenceError: __WC_CONFIG__ is not defined` errors

[AriPerkkio]

• Fixes https://github.com/stackblitz/tutorialkit/issues/290
• Ref. https://github.com/withastro/astro/issues/11874

As work-around for the upstream issue, let's convert this component into React component instead of Astro one. It's then loaded on client side after Vite's define is applied, it seems.

Note that the original bug is not visible when developing TutorialKit in the monorepo. It only appears in projects that are using the actual packages. Tested locally by linking packages with pnpm.

[stackblitz[bot]]

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[AriPerkkio]

/pkg-pr-new