Allow uninstallation of language features when a language is uninstalled

When this policy setting is enabled, some language features (such as handwriting recognizers and spell checking dictionaries) included with a language can be uninstalled from a user’s machine when the language is uninstalled. The language can be reinstalled with a different selection of included language features if needed. When this policy setting is disabled, language features remain on the user’s machine when the language is uninstalled.