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### Issue Details

* **Electron Version:**
  * 10.1.3
* **Operating System:**
  * win7 sp1 x64

- without worldSafeExecuteJavaScript, `(webFrame|webContents).executeJavaScript('new Promise(resolve => setTimeout(() => resolve(2), 3000));')` works as expected; the executeJavaScript promise waits for the eval promise.
- in the case of webFrame the evaled promise is returned raw
- in the case of webContents the promise is marshaled
- with worldSafeExecuteJavaScript, both error with: "An object could not be cloned"
- webContents should continue marshaling promises, otherwise its an unnecessary breaking change
- webFrame should marshal promises for consistency with webContents
- the clone restriction would be on the promise resolve value

### To Reproduce
`(webFrame|webContents).executeJavaScript('new Promise(resolve => setTimeout(() => resolve(2), 3000));')`


shell/renderer/api/electron_api_context_bridge.cc
support_dynamic_properties, recursion_depth + 1);
      if (value_for_array.IsEmpty())
        return v8::MaybeLocal<v8::Value>();
      if (!IsTrue(cloned_arr->Set(destination_context, static_cast<int>(i),
                                  value_for_array.ToLocalChecked()))) {
        return v8::MaybeLocal<v8::Value>();
      }
    }
    object_cache->CacheProxiedObject(value, cloned_arr);
    return v8::MaybeLocal<v8::Value>(cloned_arr);
  }
  
  blink::WebElement elem = blink::WebElement::FromV8Value(value);
  if (!elem.IsNull()) {
    v8::Context::Scope destination_context_scope(destination_context);
    return v8::MaybeLocal<v8::Value>(elem.ToV8Value(
        destination_context->Global(), destination_context->GetIsolate()));
  }
  
  if (IsPlainObject(value)) {
    auto object_value = v8::Local<v8::Object>::Cast(value);
    auto passed_value = CreateProxyForAPI(
        object_value, source_context, destination_context, object_cache,
        support_dynamic_properties, recursion_depth + 1);
    if (passed_value.IsEmpty())
      return v8::MaybeLocal<v8::Value>();
    return v8::MaybeLocal<v8::Value>(passed_value.ToLocalChecked());
  }
  
  blink::CloneableMessage ret;