### 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::Context::Scope destination_context_scope(destination_context);
    
    
    
    
    v8::MaybeLocal<v8::Value> maybe_message = value.As<v8::Object>()->Get(
        source_context,
        gin::ConvertToV8(source_context->GetIsolate(), "message"));
    v8::Local<v8::Value> message;
    if (maybe_message.ToLocal(&message) && message->IsString()) {
      return v8::MaybeLocal<v8::Value>(
          v8::Exception::Error(message.As<v8::String>()));
    }
    return v8::MaybeLocal<v8::Value>(v8::Exception::Error(
        v8::Exception::CreateMessage(destination_context->GetIsolate(), value)
            ->Get()));
  }
  
  
  
  if (IsPlainArray(value)) {
    v8::Context::Scope destination_context_scope(destination_context);
    v8::Local<v8::Array> arr = v8::Local<v8::Array>::Cast(value);
    size_t length = arr->Length();
    v8::Local<v8::Array> cloned_arr =
        v8::Array::New(destination_context->GetIsolate(), length);
    for (size_t i = 0; i < length; i++) {
      auto value_for_array = PassValueToOtherContext(
          source_context, destination_context,
          arr->Get(source_context, i).ToLocalChecked(), object_cache,