Hot reloading not working when running `npm run dev`

[chacha912]

Description: After switching from webpack to vite in #795 , running npm run dev does not result in hot reloading when changes are made in the public example files.

Why: It allows developers to make changes to the source code and see those changes take effect immediately without having to stop or restart the program.

[hackerwins]

Related to https://github.com/vitejs/vite/issues/7009.