[upd] web-client (simple): Bump vite in /client/simple (#5751)

Bumps [vite](https://github.com/vitejs/vite/tree/HEAD/packages/vite) from 8.0.0-beta.14 to 8.0.0-beta.15.
- [Release notes](https://github.com/vitejs/vite/releases)
- [Changelog](https://github.com/vitejs/vite/blob/main/packages/vite/CHANGELOG.md)
- [Commits](https://github.com/vitejs/vite/commits/v8.0.0-beta.15/packages/vite)

---
updated-dependencies:
- dependency-name: vite
  dependency-version: 8.0.0-beta.15
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

client/simple/package.json

@@ -43,7 +43,7 @@
     "stylelint-prettier": "^5.0.3",
     "svgo": "^4.0.0",
     "typescript": "~5.9.3",
-    "vite": "8.0.0-beta.14",
+    "vite": "8.0.0-beta.15",
     "vite-bundle-analyzer": "^1.3.6"
   }
 }