### Preflight Checklist

- [X] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
- [X] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/master/CODE_OF_CONDUCT.md) that this project adheres to.
- [X] I have searched the [issue tracker](https://www.github.com/electron/electron/issues) for a feature request that matches the one I want to file, without success.

### Electron Version

14.0.0-beta.18

### What operating system are you using?

Other Linux

### Operating System Version

Fedora 34

### What arch are you using?

x64

### Last Known Working Electron version

13.1.8

### Expected Behavior

Frameless windows should have mouse interaction, similar to regular windows.

### Actual Behavior

Every single regular mouse event is completely ignored, on all levels thinkable. Selection doesn't work, double-clicking doesn't, input fields don't work, and even custom events on the window/body don't fire at all.. The keyboard does work as expected, so the app is not frozen and hasn't crashed.

### Testcase Gist URL

_No response_

### Additional Information

No gist needed, just add `"frame": false` to any basic electron app to break all mouse functionality when using the latest beta.
shell/browser/native_window_views.cc
#include "shell/browser/api/electron_api_web_contents.h"
#include "shell/browser/native_browser_view_views.h"
#include "shell/browser/ui/drag_util.h"
#include "shell/browser/ui/inspectable_web_contents.h"
#include "shell/browser/ui/inspectable_web_contents_view.h"
#include "shell/browser/ui/views/root_view.h"
#include "shell/browser/web_contents_preferences.h"
#include "shell/browser/web_view_manager.h"
#include "shell/browser/window_list.h"
#include "shell/common/electron_constants.h"
#include "shell/common/gin_converters/image_converter.h"
#include "shell/common/gin_helper/dictionary.h"
#include "shell/common/options_switches.h"
#include "ui/aura/window_tree_host.h"
#include "ui/base/hit_test.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/views/background.h"
#include "ui/views/controls/webview/unhandled_keyboard_event_handler.h"
#include "ui/views/controls/webview/webview.h"
#include "ui/views/widget/native_widget_private.h"
#include "ui/views/widget/widget.h"
#include "ui/views/window/client_view.h"
#include "ui/wm/core/shadow_types.h"
#include "ui/wm/core/window_util.h"
#if defined(OS_LINUX)
#include "base/strings/string_util.h"
#include "shell/browser/browser.h"
#include "shell/browser/linux/unity_service.h"
#include "shell/browser/ui/views/frameless_view.h"