### Preflight Checklist
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* [x] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
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*I found one but it's been closed since 2017 athough updates are still happening on it either close this issue and reopen that or make this the new issue #9092* 

### Issue Details

* **Electron Version:**
  * v10.1.1
* **Operating System:**
  * Windows 10 18363
* **Last Known Working Electron version:**
  * unknown

### Expected Behavior
calling `isMaximized()` to respond if the window is maximized 

### Actual Behavior
`isMaximized()` always returns false when transparent is set to true on BrowserWindow

### To Reproduce
https://gist.github.com/293ffab750b019714f12d8e1f203e611


### Additional Information
#9092 is a closed issue with people still reporting this problems but since it's closed I don't think admins are looking hence creating this issue.

shell/browser/native_window_views_win.cc
switch (w_param) {
    case SIZE_MAXIMIZED:
    case SIZE_MINIMIZED: {
      WINDOWPLACEMENT wp;
      wp.length = sizeof(WINDOWPLACEMENT);
      if (GetWindowPlacement(GetAcceleratedWidget(), &wp)) {
        last_normal_placement_bounds_ = gfx::Rect(wp.rcNormalPosition);
      }
      
      
      if (w_param == SIZE_MAXIMIZED &&
          last_window_state_ != ui::SHOW_STATE_MAXIMIZED) {
        last_window_state_ = ui::SHOW_STATE_MAXIMIZED;