[stable25] Detect aborted connection in OC\Files\View and stop writing data to the output buffer

[come-nc]

• Resolves: Prevent continuous file-reading when stopping/restarting streaming triggered by in-video searches #40107

Summary

When reading a video through a public link, and moving the time picker to different times in the video, each request keeps running after being aborted by the web browser and that overloads the server.
This is not the same as sabre-io/http#207 because in this case the download does not go through dav.

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[come-nc]

/backport to stable26

[come-nc]

/backport to stable27

[come-nc]

/backport to master

[backportbot-nextcloud]

The backport to stable27 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable27
git pull origin stable27

# Create the new backport branch
git checkout -b fix/foo-stable27

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts. Resolve them.
git cherry-pick abc123

# Push the cherry pick commit to the remote repository and open a pull request
git push origin fix/foo-stable27

More info at https://docs.nextcloud.com/server/latest/developer_manual/getting_started/development_process.html#manual-backport

[backportbot-nextcloud]

The backport to master failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout master
git pull origin master

# Create the new backport branch
git checkout -b fix/foo-master

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts. Resolve them.
git cherry-pick abc123

# Push the cherry pick commit to the remote repository and open a pull request
git push origin fix/foo-master

More info at https://docs.nextcloud.com/server/latest/developer_manual/getting_started/development_process.html#manual-backport