### 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
{
    v8::Local<v8::Context> error_context =
        error_target == BridgeErrorTarget::kSource ? source_context
                                                   : destination_context;
    v8::Context::Scope error_scope(error_context);
    
    if (!gin::ConvertFromV8(error_context->GetIsolate(), value, &ret))
      return v8::MaybeLocal<v8::Value>();
  }
  {
    v8::Context::Scope destination_context_scope(destination_context);
    v8::Local<v8::Value> cloned_value =
        gin::ConvertToV8(destination_context->GetIsolate(), ret);
    object_cache->CacheProxiedObject(value, cloned_value);
    return v8::MaybeLocal<v8::Value>(cloned_value);
  }
}
void ProxyFunctionWrapper(const v8::FunctionCallbackInfo<v8::Value>& info) {
  TRACE_EVENT0("electron", "ContextBridge::ProxyFunctionWrapper");
  CHECK(info.Data()->IsObject());
  v8::Local<v8::Object> data = info.Data().As<v8::Object>();
  bool support_dynamic_properties = false;
  gin::Arguments args(info);
  
  v8::Local<v8::Context> calling_context = args.isolate()->GetCurrentContext();
  
  v8::MaybeLocal<v8::Value> sdp_value =
      GetPrivate(calling_context, data,
                 context_bridge::kSupportsDynamicPropertiesPrivateKey);
  v8::MaybeLocal<v8::Value> maybe_func = GetPrivate(