Restrict Vite entry point to index.html (#5934)

## Summary

Restricts Vite's dependency optimization scanning entry points to the
root `index.html`, preventing excessive error messages from scanning
unintended files in other packages.

## Changes

- **What**: Adds `entries: ['index.html']` to `optimizeDeps` in
vite.config.mts
- **Breaking**: None

## Review Focus

May require additional entries or inversion - exclude-based approach
instead of include-based - if possible.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5934-Restrict-Vite-entry-point-to-index-html-2846d73d3650816fbf45fa29493891ae)
by [Unito](https://www.unito.io)

vite.config.mts

@@ -198,6 +198,7 @@ export default defineConfig({
   },
 
   optimizeDeps: {
-    exclude: ['@comfyorg/comfyui-electron-types']
+    exclude: ['@comfyorg/comfyui-electron-types'],
+    entries: ['index.html']
   }
 }) satisfies UserConfig as UserConfig