[UI] When in landscape, bottom sheets don't show up correctly

[Fs00]

In landscape mode, all bottom sheets (main menu, settings, edit notebook etc.) show up only for a very little portion when you first open them, which is suboptimal for the user experience because you need to open them fully to interact with their content.
You can see a screen capture of this problem here: https://streamable.com/v9bri
I propose to change the current behaviour so that, when the device is in landscape, bottom sheets open fully right away, instead of just partially.