set the parent folder read/write always when downloading a new file

[mgallien]

that would also cover code paths for virtual files

[camilasan]

With the CFAPI it seems that we don't have to change permissions before creating a placeholder file because of FsMetadata: https://learn.microsoft.com/en-us/windows/win32/fileio/file-attribute-constants

We always use FILE_ATTRIBUTE_NORMAL which I believe allows us to create the placeholder even in a read only folder:
cloudEntry.FsMetadata.BasicInfo.FileAttributes = FILE_ATTRIBUTE_NORMAL;

[github-actions]

Artifact containing the AppImage: nextcloud-appimage-pr-7808.zip

SHA256 checksum: f0511c8bda654c1be5752fd564a745e52c10b4bcc81567252c91015bd4f71ce3

To test this change/fix you can download the above artifact file, unzip it, and run it.

Please make sure to quit your existing Nextcloud app and backup your data.

[sonarqubecloud]

Quality Gate failed

Failed conditions
B Maintainability Rating on New Code (required ≥ A)
16 New Code Smells (required ≤ 0)

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