### 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

12.0.5

### What operating system are you using?

macOS

### Operating System Version

11.2.3

### What arch are you using?

arm64 (including Apple Silicon)

### Last Known Working Electron version

_No response_

### Expected Behavior

`document.hasFocus()` is only `true` for the window that has focus.

### Actual Behavior

Ever window reports `document.hasFocus()` to be `true` right after opening.

### Testcase Gist URL

https://gist.github.com/16e6fc829febd0cab115dfd0850a31be

### Additional Information

_No response_
shell/browser/api/electron_api_web_contents.cc
v8::Local<v8::Value> val,
                     printing::mojom::MarginType* out) {
    std::string type;
    if (ConvertFromV8(isolate, val, &type)) {
      if (type == "default") {
        *out = printing::mojom::MarginType::kDefaultMargins;
        return true;
      }
      if (type == "none") {
        *out = printing::mojom::MarginType::kNoMargins;
        return true;
      }
      if (type == "printableArea") {
        *out = printing::mojom::MarginType::kPrintableAreaMargins;
        return true;
      }
      if (type == "custom") {
        *out = printing::mojom::MarginType::kCustomMargins;
        return true;
      }
    }
    return false;
  }
};
template <>
struct Converter<printing::mojom::DuplexMode> {
  static bool FromV8(v8::Isolate* isolate,