Merge develop into master

Author: chillenious

apps/element-demo/package.json

@@ -9,7 +9,7 @@
     "dev:iife:local": "PUBLIC_ELEMENT_DEMO_IIFE_BUNDLE_MODE=local vite dev",
     "dev:iife:hosted": "PUBLIC_ELEMENT_DEMO_IIFE_BUNDLE_MODE=hosted vite dev",
     "prebuild": "bun run generate-imports && bun run generate-docs && bun run --cwd ../.. verify:no-local-paths apps/element-demo/src/lib/element-imports.js apps/element-demo/src/lib/element-imports.d.ts",
-    "build": "vite build",
+    "build": "vite build && cp build/index.html build/404.html",
     "preview": "vite preview",
     "generate-imports": "bun run scripts/generate-element-imports.ts",
     "generate-docs": "cd ../.. && bun run cli docs:generate",