src: make deleted function public in node_main_instance.h

PR-URL: #27509
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

src/node_main_instance.h

@@ -65,13 +65,12 @@ class NodeMainInstance {
   static v8::StartupData* GetEmbeddedSnapshotBlob();
 
   static const size_t kNodeContextIndex = 0;
-
- private:
   NodeMainInstance(const NodeMainInstance&) = delete;
   NodeMainInstance& operator=(const NodeMainInstance&) = delete;
   NodeMainInstance(NodeMainInstance&&) = delete;
   NodeMainInstance& operator=(NodeMainInstance&&) = delete;
 
+ private:
   NodeMainInstance(v8::Isolate* isolate,
                    uv_loop_t* event_loop,
                    MultiIsolatePlatform* platform,