🐛 BUG: typo in "typegen" script in package.json

### Which template does this pertain to?

react-router-starter-template

### What versions are you using?

4.7.0 [Wrangler], 22.14.0 [Node]

### What operating system and version are you using?

Mac Sequoia 15.3.2

### Please provide a link to a minimal reproduction (optional)

_No response_

### Describe the Bug

## Description
The default package.json script in the template seems to have a typo in the`typegen` script.

current
```json
"typegen": "wrangler types && react-router-typegen"
```

Expected:
```json
"typegen": "wrangler types && react-router typegen"
```

The command react-router-typegen does not exist, and running npm run typegen fails with a "command not found" error.
It should be react-router typegen, matching the CLI usage of the react-router package.

### Please provide any relevant error logs

_No response_