test: deflake test-inspector-strip-types

Use the `NodeRuntime.waitingForDebugger` event.

Refs: #51560
PR-URL: #55058
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Chemi Atlow <chemi@atlow.co.il>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>

Author: lpinca

test/parallel/test-inspector-strip-types.js

@@ -18,13 +18,14 @@ async function runTest() {
 
   const session = await child.connectInspectorSession();
 
-  const commands = [
+  await session.send({ method: 'NodeRuntime.enable' });
+  await session.waitForNotification('NodeRuntime.waitingForDebugger');
+  await session.send([
     { 'method': 'Debugger.enable' },
     { 'method': 'Runtime.enable' },
     { 'method': 'Runtime.runIfWaitingForDebugger' },
-  ];
-
-  await session.send(commands);
+  ]);
+  await session.send({ method: 'NodeRuntime.disable' });
 
   const scriptParsed = await session.waitForNotification((notification) => {
     if (notification.method !== 'Debugger.scriptParsed') return false;