fix: dangling raw_ptr NodeBindings::uv_env_ (#42933)

shell/browser/electron_browser_main_parts.cc

@@ -604,6 +604,7 @@ void ElectronBrowserMainParts::PostMainMessageLoopRun() {
   node_env_->set_trace_sync_io(false);
   js_env_->DestroyMicrotasksRunner();
   node::Stop(node_env_.get(), node::StopFlags::kDoNotTerminateIsolate);
+  node_bindings_->set_uv_env(nullptr);
   node_env_.reset();
 
   auto default_context_key = ElectronBrowserContext::PartitionKey("", false);

shell/browser/electron_browser_main_parts.h

@@ -155,10 +155,10 @@ class ElectronBrowserMainParts : public content::BrowserMainParts {
   // Before then, we just exit() without any intermediate steps.
   std::optional<int> exit_code_;
 
-  std::unique_ptr<NodeBindings> node_bindings_;
+  const std::unique_ptr<NodeBindings> node_bindings_;
 
   // depends-on: node_bindings_
-  std::unique_ptr<ElectronBindings> electron_bindings_;
+  const std::unique_ptr<ElectronBindings> electron_bindings_;
 
   // depends-on: node_bindings_
   std::unique_ptr<JavascriptEnvironment> js_env_;