```sh
yarn test --build --project devtools
```

This doesn't actually run any DevTools tests. It runs the main React tests.

Console output shows that it's choosing the wrong config:
```sh
$ yarn test --build --project devtools
$ node ./scripts/jest/jest-cli.js --build --project devtools
$ NODE_ENV=development RELEASE_CHANNEL=experimental node ./scripts/jest/jest.js --config ./scripts/jest/config.build.js
```

I wonder if this is also happening for other targets?
type: 'boolean',
      default: false,
    },
    project: {
      alias: 'p',
      describe: 'Run the given project.',
      requiresArg: true,
      type: 'string',
      default: 'default',
      choices: ['default', 'devtools'],
    },
    releaseChannel: {
      alias: 'r',
      describe: 'Run with the given release channel.',
      requiresArg: true,
      type: 'string',
      default: 'experimental',
      choices: ['experimental', 'stable', 'www-classic', 'www-modern'],
    },
    env: {
      alias: 'e',
      describe: 'Run with the given node environment.',
      requiresArg: true,
      type: 'string',
      choices: ['development', 'production'],
    },
    prod: {
      describe: 'Run with NODE_ENV=production.',
      requiresArg: false,
      type: 'boolean',