[Windows] Make sure that `FileSystem.Current.AppDataDirectory` folder exists in unpackaged

[MartyIX]

Description of Change

I'm not too sure if the PR is correct or not as I haven't figured out how to run Windows tests locally.

Anyway, #22231 mentions C:\Users\davidortinau\AppData\Roaming\User Name\com.simplyprofound.sentencestudio\Data\ and that Data folder comes from this place.

Issues Fixed

Fixes #22231

[dotnet-policy-service[bot]]

Hey there @MartyIX! Thank you so much for your PR! Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

[MartyIX]

Microsoft.Maui.Essentials.Sample.exe reports in the File System section:

and the folders are there.

[MartyIX]

@mattleibow Does this look good to you?

[mattleibow]

/azp run

[mattleibow]

Very nice, thanks.

[azure-pipelines[bot]]

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