[mobile only] Add to playlist has floating search bar

[peterklingelhofer]

Operating system

iOS 15.3.1

Browser name and version

stream-app 1.1.1

Expected behavior

Add to playlist modal should look as expected on mobile even when the user has a lot of playlists to potentially add a track to.

Actual behavior

Add to playlist modal presents user with a floating search bar.

Steps to reproduce behavior

Write here.