RN: Update set-versions for private/ Packages (#51937)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/51937

Updates the `set-versions` script to also update workspace packages in `private/*`. Unlike with packages in `packages/*`, this does not change their `"version"` fields, though. It only updates their dependencies.

Changelog:
[Internal]

Reviewed By: huntie

Differential Revision: D76358273

fbshipit-source-id: d0e0557d17c355828020a218083b98dd177a6732

scripts/releases/set-version.js

@@ -76,12 +76,15 @@ async function setVersion(
     includeReactNative: true,
   });
   const newPackageVersions = Object.fromEntries(
-    Object.keys(packages).map(packageName => [
-      packageName,
-      packageName === 'react-native' && skipReactNativeVersion
-        ? '1000.0.0'
-        : version,
-    ]),
+    Object.entries(packages).map(([packageName, {packageJson}]) => {
+      let packageVersion = version;
+      if (packageName === 'react-native' && skipReactNativeVersion) {
+        packageVersion = '1000.0.0';
+      } else if (packageJson.private === true) {
+        packageVersion = packageJson.version ?? '0.0.0';
+      }
+      return [packageName, packageVersion];
+    }),
   );
 
   const packagesToUpdate = [

scripts/utils/monorepo.js

@@ -13,7 +13,7 @@ const {promises: fs} = require('fs');
 const glob = require('glob');
 const path = require('path');
 
-const WORKSPACES_CONFIG = 'packages/*';
+const WORKSPACES_CONFIG = '{packages,private}/*';
 
 /*::
 export type PackageJson = {