Bump react native version to 0.74

[imSzukala]

1. Reverts this PR: Bump the npm_and_yarn group across 2 directories with 2 updates #253
2. Bumps RN version to 0.74
3. Updates setup script

[liutingdu]

is there a way to block future auto upgrades on this 🤔

[uddish]

@liutingdu
We could add a preinstall hook that won't let us upgrade the version.

If this seems too strict, maybe we can add a warning.

We can add an engine config in our package.json for this

"engines": {
  "react-native": "0.74.0"
}