Platform View contents (flt-platform-view) are not being rendered to the DOM when an app is compiled to wasm and has multiViewEnabled.

The problem is this:

• https://github.com/flutter/engine/blob/76c6f793c6d36ab91a29f4cb9fd59baa32352dfd/lib/web_ui/lib/src/engine/scene_view.dart#L164-L168

We should fix that TODO to ensure that injectPlatformView is called in the correct view (which is not the implicitView in multi-view mode).