File picker may crash on iOS 15.0~15.1.1

[Saafo]

I've met a crash with info Fatal error: Use of unimplemented initializer 'init(documentTypes:in:)' for class '<my own class which inherit UIDocumentPickerViewController> on iOS 14~15 in my app, and search for usages on github and found your repo, which has similar usage as mine.

And I've test the crash is also reproducible on iOS 15.0~15.1.1, and on iOS 15.2 it's gone.

So I think the version check may change 15.0 -> 15.2. You can verify it with a iOS 15.0/15.1 device.

Mask-iOS/Maskbook/Scene/Setting/Backup/Recovery/RestoreDataPickerController.swift

Line 32 in d05da09

// will crash on iOS 14.1