cluster: const numWorkers added in test-inspect-support-for-node_options

const numWorkers added to specify number of workers spawned
in test-inspect-support-for-node_options. PR nodejs#19165

Fixes : nodejs#19026

Author: sameer-coder

test/parallel/test-inspect-support-for-node_options.js

@@ -10,10 +10,11 @@ checkForInspectSupport('--inspect');
 function checkForInspectSupport(flag) {
 
   const nodeOptions = JSON.stringify(flag);
+  const numWorkers = 2;
   process.env.NODE_OPTIONS = flag;
 
   if (cluster.isMaster) {
-    for (let i = 0; i < 2; i++) {
+    for (let i = 0; i < numWorkers; i++) {
       cluster.fork();
     }
 
@@ -24,6 +25,6 @@ function checkForInspectSupport(flag) {
     cluster.on('exit', common.mustCall((worker, code, signal) => {
       const errMsg = `For NODE_OPTIONS ${nodeOptions}, failed to start cluster`;
       assert.strictEqual(worker.exitedAfterDisconnect, true, errMsg);
-    }, 2));
+    }, numWorkers));
   }
 }