Release 4.0.0-rc4: Updated dependencies and refined mobile image fix

- Updated 8 npm packages to latest versions including TypeScript, Astro, and linting tools
- Refined mobile image loading solution by removing JavaScript runtime fix in favor of HTML-level path generation
- All images now use relative paths generated at build time for optimal compatibility

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

package.json

@@ -1,7 +1,7 @@
 {
   "name": "admin-lte",
   "description": "Responsive open source admin dashboard and control panel.",
-  "version": "4.0.0-rc3",
+  "version": "4.0.0-rc4",
   "type": "module",
   "license": "MIT",
   "author": "Colorlib <https://colorlib.com>",