### 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
if (desc.Has("get") || desc.Has("set")) {
          v8::Local<v8::Value> getter;
          v8::Local<v8::Value> setter;
          desc.Get("get", &getter);
          desc.Get("set", &setter);
          {
            v8::Context::Scope destination_context_scope(destination_context);
            v8::Local<v8::Value> getter_proxy;
            v8::Local<v8::Value> setter_proxy;
            if (!getter.IsEmpty()) {
              if (!PassValueToOtherContext(source_context, destination_context,
                                           getter, object_cache,
                                           support_dynamic_properties, 1)
                       .ToLocal(&getter_proxy))
                continue;
            }
            if (!setter.IsEmpty()) {
              if (!PassValueToOtherContext(source_context, destination_context,
                                           setter, object_cache,
                                           support_dynamic_properties, 1)
                       .ToLocal(&setter_proxy))
                continue;
            }
            v8::PropertyDescriptor desc(getter_proxy, setter_proxy);
            ignore_result(proxy.GetHandle()->DefineProperty(
                destination_context, key.As<v8::Name>(), desc));
          }
          continue;
        }
      }