fix(windows): APPDATA is required for windows

[jcassidyav]

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What is the current behavior?

With PR #5817 the options.env is set, this seems to have the effect of removing appData from the environment which windows needs to complete a build. Not sure if this is the best corrective action but adding it explicitly here allows builds on windows to proceed.

What is the new behavior?

Build succeeds on windows.

Note to test on windows with the latest alpha we also need PR https://github.com/NativeScript/ios-mobileprovision-finder/#22