feat: add Team Folder recovery bin

[cavazquez]

Assisted-by: Codex:gpt-5.6

Summary

This PR changes Team Folder deletion into a recoverable operation. Instead of permanently deleting a Team Folder immediately, it moves it to a recovery bin for 30 days.

What changed

• Adds a recovery bin visible only to global administrators.
• Allows global administrators to restore an archived Team Folder or permanently delete it.
• Keeps the folder files and configuration while the folder is recoverable.
• Permanently removes expired entries through a daily background job after 30 days.
• Adds the database migration and updates the OpenAPI contract and generated TypeScript types.
• Updates occ groupfolders:delete: the default operation archives the folder, while --permanent deletes its data.

Testing

• Manually tested archive, restore, and permanent deletion in a Nextcloud 36 instance.
• Ran PHP lint, PHP-CS-Fixer, PHPStan, and the FolderManager recovery tests: 35 tests and 81 assertions passed.
• Ran ESLint, Stylelint, and the production frontend build.
• The full local PHPUnit suite has one unrelated Circles test failure because the local development container does not include Circles. The repository CI installs Circles for that suite.

🤖 AI (if applicable)

• The content of this PR was partly or fully generated using AI

[JonathanTreffler]

Why use NoAdminRequired and then immediately do a manual admin check?

(I am not a maintainer of this repository and this is not a full review)