Found while investigating #25021

ElectronBrowserMainParts has a periodic timer that is used to trigger GC once a minute even on an idle system. While one wakeup per minute isn't bad, it's also been in there [since 2014](https://github.com/electron/electron/commit/4dd78480846557370dd53789d50e6cb0d6a81bcd) and may or may not still be necessary. It might be worth seeing what happens to memory overhead if this is disabled and/or triggered with a different mechanism.

```c++
  // Start idle gc.
  gc_timer_.Start(
      FROM_HERE, base::TimeDelta::FromMinutes(1),
      base::Bind(&v8::Isolate::LowMemoryNotification,
                 base::Unretained(js_env_->isolate())));
```


shell/browser/electron_browser_main_parts.cc
#if defined(USE_AURA)
  display::Screen* screen = views::CreateDesktopScreen();
  display::Screen::SetScreenInstance(screen);
#if defined(OS_LINUX)
  views::LinuxUI::instance()->UpdateDeviceScaleFactor();
#endif
#endif
  if (!views::LayoutProvider::Get())
    layout_provider_ = std::make_unique<views::LayoutProvider>();
  
  fake_browser_process_->SetApplicationLocale(
      ElectronBrowserClient::Get()->GetApplicationLocale());
  
  MediaCaptureDevicesDispatcher::GetInstance();
  
  MediaCaptureDevicesDispatcher::GetInstance();
#if defined(OS_MAC)
  ui::InitIdleMonitor();
#endif
  fake_browser_process_->PreCreateThreads();
  
  Browser::Get()->PreCreateThreads();
  return 0;
}
void ElectronBrowserMainParts::PostCreateThreads() {