test(macos-test-app): drop repo-root watchFolders to check if still needed

Experiment: with nodeModulesPaths in place, is the watchFolders push still
required for Metro to serve the out-of-tree workspace package sources? Revert
if the bundle step fails.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011PM3HdJVbivXpzc2MQJV9T

Author: claude

apps/test-app/metro.config.js

@@ -12,11 +12,7 @@ const config = makeMetroConfig({
 });
 
 if (config.projectRoot.endsWith("macos-test-app")) {
-  // This patch is needed to locate packages in the monorepo from the MacOS app
-  // which is intentionally kept outside of the workspaces configuration to prevent
-  // duplicate react-native version and pollution of the package lock.
   const path = require("node:path");
-  config.watchFolders.push(path.resolve(__dirname, "../.."));
 
   // Resolve workspace packages (and the specifiers the babel plugin rewrites
   // their `*.node` requires to) from this app's own node_modules, independent of