Change parent type for file uploads

[blazejpass]

Description

Changing parent type for upload files for server side changes - Adding checking permission in board-do.rule.ts for downloading and uploading files in tldraw.

Links to Tickets or other pull requests

https://ticketsystem.dbildungscloud.de/browse/BC-6462 https://bc-6462-authorization-for-tldraw-files.dbc.dbildungscloud.dev/ https://github.com/hpi-schul-cloud/schulcloud-server/pull/4785

Changes

Datasecurity

Deployment

New Repos, NPM pakages or vendor scripts

Screenshots of UI changes

Approval for review

• [x] All points were discussed with the ticket creator, support-team or product owner. The code upholds all quality guidelines from the PR-template.

Notice: Please remove the WIP label if the PR is ready to review, otherwise nobody will review it.

[davwas]

Closing as no client changes were needed.