Asset tag create only works if file is targeted to root directory

Inside a plugin.xml file,

<asset src="www/style/inappbrowser.css" target="style/inappbrowser.css"/>

results in:

cp: copyFileSync: could not write to dest file (code=ENOENT):/Users/campbelg/IdeaProjects/wms-circ-app/platforms/browser/platform_www/style/inappbrowser.css

Related to CB-13562, which fixed the case of an asset file whose target was the root directory. This bug is for assets whose target contains a directory.

The expected behavior is described by the plugin.xml documentation:

https://cordova.apache.org/docs/en/latest/plugin_ref/spec.html#asset