fix: set scripts imported by HTML moduleSideEffects=true

[sapphi-red]

Description

When setting moduleSideEffects: false, all scripts gets tree-shaked and the built output becomes empty. This is because we convert HTML files into a JS file just containing side effect imports that points to the href attr of script tags.

While the behavior is correct (the scripts do have a side-effect and setting it false is a lie) and kind of expected, it is more easier to configure if these scripts are marked as moduleSideEffects: true as in most cases you won't rely on side-effect imports. (The correct way of fixing this is to set treeshake.moduleSideEffects: (id) => scriptsImportedByHtml.includes(id) instead.)

fixes #16720
fixes #17911

This PR reverts #12786 as this fix covers that one as well. (To fix that one correctly, the sideEffects field should include the scripts imported by the HTML file.)

[patak-dev]

/ecosystem-ci run

[vite-ecosystem-ci]

📝 Ran ecosystem CI on cb81d59: Open

suite	result	latest scheduled
astro	❌ failure	❌ failure
remix	❌ failure	❌ failure
sveltekit	❌ failure	❌ failure
vike	❌ failure	❌ failure
vite-environment-examples	✅ success	❌ failure
vite-plugin-svelte	❌ failure	❌ failure
vitest	❌ failure	❌ failure

✅ analogjs, histoire, ladle, laravel, marko, nuxt, previewjs, quasar, qwik, rakkas, redwoodjs, storybook, unocss, vite-plugin-pwa, vite-plugin-react, vite-plugin-react-swc, vite-plugin-vue, vite-setup-catalogue, vitepress, vuepress

[patak-dev]

@sapphi-red I think we can merge this one, but letting you press the button because you added the p2-to-be-discussed label and I don't know if you'd like to bring this to a team meeting

[sapphi-red]

I added the label because I thought it might be controversial whether this PR should be merged, since it can be seen as a configuration error. But if both of you think it's good to have, then I think we can merge it.