Don’t pause kernel isolate on startup

runtime/vm/dart.cc

Index: runtime/vm/dart.cc
diff --git a/runtime/vm/dart.cc b/runtime/vm/dart.cc
index 978f5468d1563570da08a1d156c99e0f12334105..f872fa17b3fda4b55a769741d0ae976d622c1446 100644
--- a/runtime/vm/dart.cc
+++ b/runtime/vm/dart.cc
@@ -614,7 +614,8 @@ RawError* Dart::InitializeIsolate(const uint8_t* snapshot_data,
   KernelIsolate::InitCallback(I);
 #endif
   ServiceIsolate::MaybeMakeServiceIsolate(I);
-  if (!ServiceIsolate::IsServiceIsolate(I)) {
+  if (!ServiceIsolate::IsServiceIsolate(I) &&
+      !KernelIsolate::IsKernelIsolate(I)) {
     I->message_handler()->set_should_pause_on_start(
         FLAG_pause_isolates_on_start);
     I->message_handler()->set_should_pause_on_exit(FLAG_pause_isolates_on_exit);