fix: hide text on mobile for TopBar only

[Antreesy]

☑️ Resolves

• Follow-up for feat(mobile): use button without text if on mobile #12383
• Only button in TopBar was meant to be used without text on mobile, but we forgot that component is reusable 🙈

🖌️ UI Checklist

🖼️ Screenshots / Screencasts

🏚️ Before	🏡 After

🏁 Checklist

• 🌏 Tested with Chrome, Firefox and Safari or should not be risky to browser differences
• 🖥️ Tested with Desktop client or should not be risky for it
• 🖌️ Design was reviewed, approved or inspired by the design team
• ⛑️ Tests are included or not possible
• 📗 User documentation in https://github.com/nextcloud/documentation/tree/master/user_manual/talk has been updated or is not required

[szaimen]

Right 🙈
LGTM but didnt test

[nickvergessen]

backport this and the first pr to 29?

[szaimen]

/backport to stable29

[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/12437/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 1d6ea36d

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/12437/stable29

Error: No changes found in backport branch

---

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

[nickvergessen]

Was already added to the first backport by Maksim

[szaimen]

Ah I see