Remove react-native/jest-preset subpath (#57481)

Summary:
Pull Request resolved: #57481

It's been two releases since we separated `react-native/jest-preset` in 0.85 and this has been updated in the template.

Clean up by removing internal redirect module, public export, and peer dependency.

Changelog:
[General][Breaking] - `react-native/jest-preset` is removed — all projects must now migrate to `react-native/jest-preset` (package)

Reviewed By: rubennorte

Differential Revision: D111035221

fbshipit-source-id: d66fed9218c801201c1e965f8163f048934d4200

Author: huntie

packages/jest-preset/README.md

@@ -36,9 +36,3 @@ module.exports = {
 ```
 
 You can further customize your Jest configuration by specifying other options. See [Jest's `jest.config.js` documentation](https://jestjs.io/docs/configuration) to learn more.
-
-### Migration Note
-
-This Jest preset used to be part of the core `react-native` package and accessible at `react-native/jest-preset.js`. As long as `@react-native/jest-preset` is installed, `react-native/jest-preset.js` will be aliased to this package and continue to work but is deprecated.
-
-Follow the installation instructions above to migrate to `@react-native/jest-preset` and change `preset: 'react-native'` to `preset: '@react-native/jest-preset` to migrate.

packages/react-native/jest-preset.js

@@ -52,7 +52,6 @@
       "types": null,
       "default": "./src/asset-registry.js"
     },
-    "./jest-preset": "./jest-preset.js",
     "./rn-get-polyfills": "./rn-get-polyfills.js",
     "./src/fb_internal/*": "./src/fb_internal/*",
     "./package.json": "./package.json"
@@ -69,7 +68,6 @@
     "gradle/libs.versions.toml",
     "index.js",
     "index.js.flow",
-    "jest-preset.js",
     "Libraries",
     "LICENSE",
     "React-Core.podspec",
@@ -136,16 +134,12 @@
     "featureflags": "node ./scripts/featureflags/index.js"
   },
   "peerDependencies": {
-    "@react-native/jest-preset": "0.87.0-rc.0",
     "@types/react": "^19.1.1",
     "react": "^19.2.3"
   },
   "peerDependenciesMeta": {
     "@types/react": {
       "optional": true
-    },
-    "@react-native/jest-preset": {
-      "optional": true
     }
   },
   "dependencies": {