inspector: do not spin-wait while waiting for the initial connection

Fixes: nodejs#28741

PR-URL: nodejs#28756
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Aleksei Koziatinskii <ak239spb@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

src/inspector_agent.cc

@@ -699,8 +699,7 @@ class NodeInspectorClient : public V8InspectorClient {
 
     MultiIsolatePlatform* platform = env_->isolate_data()->platform();
     while (shouldRunMessageLoop()) {
-      if (interface_ && hasConnectedSessions())
-        interface_->WaitForFrontendEvent();
+      if (interface_) interface_->WaitForFrontendEvent();
       while (platform->FlushForegroundTasks(env_->isolate())) {}
     }
     running_nested_loop_ = false;