fix: Do not update page title for single file public shares

[juliusknorr]

The filename is empty and is already set on page load

To reproduce share a single file as a public share link, open it.

Page title before: "Readme.md - Nextcloud"

Page title after: "- Nextcloud"

[jancborchardt]

Thanks for fixing! FYI @skjnldsv this happens when opening odt documents e.g. on daily and the title shows as "- Nextcloud Daily" without the file name before.

[skjnldsv]

makes sense!

[skjnldsv]

/compile rebase

[skjnldsv]

/backport 92862fb to stable31

[skjnldsv]

/backport 92862fb to stable30

[backportbot]

The backport to stable31 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable31
git pull origin stable31

# Create the new backport branch
git checkout -b backport/2789/stable31

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 92862fb

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/2789/stable31

Error: Failed to create pull request: Validation Failed: {"resource":"PullRequest","code":"custom","message":"A pull request already exists for nextcloud:backport/2789/stable31."} - https://docs.github.com/rest/pulls/pulls#create-a-pull-request

---

Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.

[skjnldsv]

/backport 92862fb to stable29

[backportbot]

The backport to stable30 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable30
git pull origin stable30

# Create the new backport branch
git checkout -b backport/2789/stable30

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 92862fb

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/2789/stable30

Error: Failed to create pull request: Validation Failed: {"resource":"PullRequest","code":"custom","message":"A pull request already exists for nextcloud:backport/2789/stable30."} - https://docs.github.com/rest/pulls/pulls#create-a-pull-request

---

Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.

[backportbot]

The backport to stable29 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable29
git pull origin stable29

# Create the new backport branch
git checkout -b backport/2789/stable29

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 92862fb

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/2789/stable29

Error: Failed to create pull request: Validation Failed: {"resource":"PullRequest","code":"custom","message":"A pull request already exists for nextcloud:backport/2789/stable29."} - https://docs.github.com/rest/pulls/pulls#create-a-pull-request

---

Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.