Add missing babel-jest dependency to react-native package (#46462)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/46462

While adding D62583337, I noticed that `react-native` doesn't specify `babel-jest` as a dependency, despite referencing it in the included `jest-preset.js` — instead this would need to be installed by the template/project.

If we want to change this in future, we should consider a separate `react-native/jest-preset` package. However, I strongly believe this is the right location for this dependency: installing `react-native` = all parts of it work.

(Note that in the React Native monorepo, we are using `dependencies` for both dev and runtime deps in packages.)

Changelog: [Internal]

allow-executable-binary

## allow-executable-binary: Bypassed as this is a managed JavaScript dependency that is pre-existing in other parts of the codebase

Reviewed By: robhogan

Differential Revision: D62583665

fbshipit-source-id: 8bbcc8736e2740e45793d7b7e225ccfd1ca7f898