chore(NA): exclude target folder from being watched by cluster manager (

#64446) (#64584)

* chore(NA): exclude target folder from being watched by cluster manager

* chore(NA): fix watcher regex

* chore(NA): re-add separators to regex

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

src/cli/cluster/cluster_manager.ts

@@ -258,7 +258,7 @@ export class ClusterManager {
     );
 
     const ignorePaths = [
-      /[\\\/](\..*|node_modules|bower_components|public|__[a-z0-9_]+__|coverage)[\\\/]/,
+      /[\\\/](\..*|node_modules|bower_components|target|public|__[a-z0-9_]+__|coverage)([\\\/]|$)/,
       /\.test\.(js|ts)$/,
       ...pluginInternalDirsIgnore,
       fromRoot('src/legacy/server/sass/__tmp__'),