WebExtensions: Fix runtime.openOptionsPage()
This is not ideal but currently we don't support loading extension pages in normal EphyWebViews.
For now we can just open a new Window for options with a web view that has the extension API.
This is not ideal but currently we don't support loading extension pages in normal EphyWebViews.
For now we can just open a new Window for options with a web view that has the extension API.