### 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

12.0.1

### What operating system are you using?

macOS

### Operating System Version

11.2

### What arch are you using?

x64

### Last Known Working Electron version

_No response_

### Expected Behavior

`error.message` shouldn't be prefixed with "Uncaught Error:"

### Actual Behavior

`error.message` is prefixed with "Uncaught Error:" when an error is thrown in a function defined in the preload script and caught in the renderer process. This only happens when `contextIsolation` is enabled.

### Testcase Gist URL

https://gist.github.com/f11c77f9bc2cbf98d42a9fcaf477c80a


shell/renderer/api/electron_api_context_bridge.cc
const std::string final_key = key_path[key_path.size() - 1];
  v8::Local<v8::Object> target_object =
      TraceKeyPath(global, key_path).GetHandle();
  {
    v8::Context::Scope main_context_scope(main_context);
    context_bridge::ObjectCache object_cache;
    v8::Local<v8::Value> getter_proxy;
    v8::Local<v8::Value> setter_proxy;
    if (!getter->IsNullOrUndefined()) {
      v8::MaybeLocal<v8::Value> maybe_getter_proxy =
          PassValueToOtherContext(getter->CreationContext(), main_context,
                                  getter, &object_cache, false, 1);
      DCHECK(!maybe_getter_proxy.IsEmpty());
      getter_proxy = maybe_getter_proxy.ToLocalChecked();
    }
    if (!setter->IsNullOrUndefined() && setter->IsObject()) {
      v8::MaybeLocal<v8::Value> maybe_setter_proxy =
          PassValueToOtherContext(getter->CreationContext(), main_context,
                                  setter, &object_cache, false, 1);
      DCHECK(!maybe_setter_proxy.IsEmpty());
      setter_proxy = maybe_setter_proxy.ToLocalChecked();
    }
    v8::PropertyDescriptor desc(getter_proxy, setter_proxy);
    bool success = IsTrue(target_object->DefineProperty(
        main_context, gin::StringToV8(args->isolate(), final_key), desc));
    DCHECK(success);
    return success;
  }
}
bool IsCalledFromMainWorld(v8::Isolate* isolate) {