fix: ensure all @react-native scoped packaged are marked private

Author: Saadnajmi

yarn.config.cjs

@@ -35,7 +35,7 @@ function expectReactNativePeerDependency({Yarn}) {
 /**
  * Enforce that all @react-native/ scoped packages use the same version
  * as the react-native peer dependency declared in react-native-macos.
- * On the main branch, enforce that we use workspace:* for @react-native/ packages.
+ * Enforce that we use workspace:* for @react-native/ packages.
  * @param {Context} context
  */
 function enforceReactNativeVersionConsistency({Yarn}) {
@@ -60,18 +60,16 @@ function enforceReactNativeVersionConsistency({Yarn}) {
             return;
         }
         targetVersion = rnPeerDependency;
-    }    // Enforce this version on all @react-native/ scoped packages across all workspaces
+    }    
+    // Enforce this version on all @react-native/ scoped packages across all workspaces
     for (const dependency of Yarn.dependencies()) {
         if (dependency.ident.startsWith('@react-native/')) {
-            // Check if the target package is private (not published)
-            const targetWorkspace = Yarn.workspace({ident: dependency.ident});
-            const isPrivatePackage = targetWorkspace && targetWorkspace.manifest.private;
-            
-            if (isPrivatePackage) {
-                // Private packages should always use workspace:* since they're not published
+            Yarn.workspace({ident: dependency.ident})?.set('private', true);
+
+            // Don't use `workspace:*` for `react-native-macos` or `@react-native-macos/` scoped packages (AKA, packages we have forked
+            // until nx release with Yarn 4 supports it.
+            if (dependency.workspace.ident !== 'react-native-macos' || dependency.workspace.ident.startsWith('@react-native-macos/')) {
                 dependency.update('workspace:*');
-            } else {
-                dependency.update(targetVersion);
             }
         }
     }