refactor(examples): remove duplicate Next.js plugin from app tsconfig files (#10612)
### Description
Removes duplicate Next.js TypeScript plugin configuration from
`examples/with-nestjs/apps/web/tsconfig.json`.
The `"next"` plugin was configured in two places:
- ✅ `packages/typescript-config/nextjs.json` (shared config)
- ❌ `apps/web/tsconfig.json` (duplicate)
Since the app already extends the shared config, the duplicate plugin
definition is unnecessary.
**File:** `examples/with-nestjs/apps/web/tsconfig.json`
**Removed:**
```json
"compilerOptions": {
"plugins": [
{
"name": "next"
}
]
}
```
The plugin is already inherited from
`@repo/typescript-config/nextjs.json`.