sticky address bar on mobile

[breadguyyy]

💡 Summary

scrolling down does not hide the address bar.
(also there is an odd gap above the header)
bug not present in upstream or in native alpha which forces borderless fullscreen view
screenshots for reference:

🥰 Expected Behavior

scrolling should hide address bar

🤬 Actual Behavior

address bar sticks

📝 Steps to Reproduce

open cherrypick instance, scroll

💻 Frontend Environment

* Model and OS of the device(s): Pixel 8a
* Browser: Vivaldi, Firefox, Quetta
* Server URL: kitty.social
* CherryPick: 4.11.0-4.12.0

🛰 Backend Environment (for server admin)

* Installation Method or Hosting Service:
* CherryPick:
* Node:
* PostgreSQL:
* Redis:
* OS and Architecture:

Do you want to address this bug yourself?

• Yes, I will patch the bug myself and send a pull request