This is at a higher level than `<js-module>`. If a plugin.xml doesn't contain a `<platform name='foo'>` for the platform we've been told to install to, there's nothing to be done for it, since the plugin generally doesn't support this platform.

This is true of cordova-cli generally, it whines if you have no `<platform>` tags or if the intersection of "platforms installed in this project" and "platforms supported by the plugin" is empty. That's why the plugin.xml for refresh actually has empty `<platform>` tags for Android and iOS.