Fiddle: update to latest vite + remove react webpack stuff

[krishan711]

Description

Checklist:

• I have updated the CHANGELOG with a summary of my changes

[Copilot]

Pull request overview

This PR upgrades the Vite-based build tooling to Vite 8 / Rolldown, updating the custom Vite config/build scripts accordingly and refreshing the Node/tooling baseline to match the new ecosystem requirements.

Changes:

• Upgrade core tooling: Vite ^8.0.0, Rolldown ^1.0.0-rc.9, and Node engine requirement.
• Migrate build configuration from rollupOptions / optimizeDeps.esbuildOptions to rolldownOptions across Vite app build scripts.
• Simplify Rolldown module bundling by removing rollup-plugin-esbuild and enabling Rolldown’s built-in minification.

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
scripts/react-app-vite/app.config.js	Switch dep-optimizer/build options to rolldownOptions and keep shim aliasing workaround in place.
scripts/react-app-static-vite/build.js	Update SSR build config to use build.rolldownOptions.
scripts/react-app-ssr-vite/build.js	Update SSR build config to use build.rolldownOptions.
scripts/module-rolldown/module.config.js	Remove esbuild-based minifier plugin; rely on Rolldown minify flag.
package.json	Bump Node engine + upgrade Vite/plugin/Rolldown deps; remove Rollup/esbuild plugin deps.
package-lock.json	Lockfile refresh for the Vite 8 / Rolldown dependency graph.
Dockerfile	Update build stage base image to Node 24.13.0.

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