fix: ui 'npm run dev' emits spurious empty 'ERROR' output on console

This seems to be caused by vite-plugin-html's use of `consola.wrapConsole()`, and it seems to treat `console.error()` as still worthy of printing an 'ERROR' prefix to the console. The underlying culprit is `vite-plugin-checker`, which doesn't seem to be useful at this point, anyway. So this change removes use of `vite-plugin-checker`.

Signed-off-by: Nick Mitchell <[email protected]>

Author: starpit

pdl-live-react/package-lock.json

@@ -64,7 +64,6 @@
     "typescript": "^5.7.3",
     "typescript-eslint": "^8.22.0",
     "vite": "^6.0.11",
-    "vite-plugin-checker": "^0.9.0",
     "vite-plugin-html": "^3.2.2"
   },
   "prettier": {

pdl-live-react/package.json

@@ -1,5 +1,4 @@
 import { defineConfig } from "vite";
-import checker from "vite-plugin-checker";
 import react from "@vitejs/plugin-react";
 import { createHtmlPlugin } from "vite-plugin-html";
 
@@ -10,10 +9,6 @@ export default defineConfig(async () => ({
   base:  "./",
   plugins: [
     react(),
-    checker({
-      // e.g. use TypeScript check
-      typescript: true,
-    }),
     createHtmlPlugin({
       inject: {
         data: {