test: deflake inspector close connection test

Wait for NodeRuntime.waitingForDebugger before sending the resume
command. Runtime.executionContextCreated does not guarantee that the
child has started waiting for the debugger.

Refs: https://github.com/nodejs/node/actions/runs/36224832165/job/108356717128
Signed-off-by: Filip Skokan <panva.ip@gmail.com>
Assisted-by: Codex
PR-URL: #66320
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

Author: panva

test/parallel/test-inspector-close-terminate-connections.js

@@ -18,9 +18,9 @@ async function test() {
   const instance = new NodeInstance(['--inspect-brk=0'], script);
   const session = await instance.connectInspectorSession();
 
-  // Enable Runtime domain and wait for an event to confirm the session is live.
-  await session.send({ method: 'Runtime.enable' });
-  await session.waitForNotification('Runtime.executionContextCreated');
+  // Wait until the child is ready to receive the resume command.
+  await session.send({ method: 'NodeRuntime.enable' });
+  await session.waitForNotification('NodeRuntime.waitingForDebugger');
 
   // Resume execution so the script calls inspector.close().
   await session.send({ method: 'Runtime.runIfWaitingForDebugger' });