Fix some service protocol isolate lifecycle races

runtime/vm/service.cc

Index: runtime/vm/service.cc
diff --git a/runtime/vm/service.cc b/runtime/vm/service.cc
index 5ded7a2fc3b3d3795d4d3b2bd0afceaa736e94a8..00e8db4f6df287d9fc93f937f28f18292b27e328 100644
--- a/runtime/vm/service.cc
+++ b/runtime/vm/service.cc
@@ -3014,6 +3014,16 @@ static bool Resume(Thread* thread, JSONStream* js) {
     PrintSuccess(js);
     return true;
   }
+  if (isolate->message_handler()->should_pause_on_start()) {
+    isolate->message_handler()->set_should_pause_on_start(false);
+    isolate->SetResumeRequest();
+    if (Service::debug_stream.enabled()) {
+      ServiceEvent event(isolate, ServiceEvent::kResume);
+      Service::HandleEvent(&event);
+    }
+    PrintSuccess(js);
+    return true;
+  }
   if (isolate->message_handler()->is_paused_on_exit()) {
     isolate->message_handler()->set_should_pause_on_exit(false);
     isolate->SetResumeRequest();