fix: Restore server subscription per account from config.

[Aiiaiiio]

Quick-fix for the update-channel issues.

[github-actions]

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[nilsding]

/backport to stable-4.0

[github-actions]

Artifact containing the AppImage: nextcloud-appimage-pr-9262.zip

Digest: sha256:b36457b64c963414525af2f12fe027fac54e69da7db0ec0247db977daa9abf21

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.