Folder name in header is extremely small with long folder names

With a folder name that is 100 characters long, the header of the folder screen scales the text down to be extremely small.

FWIW, on Android we are ellipsizing the end of long folder names for this screen.

| iOS | Android |
| --- | --- |
| | |

Start by reproducing the folder screen with a 100-character folder name and locate the iOS header implementation for that screen. Compare its behavior with the Android screenshot; done means long names remain readable rather than shrinking to extremely small text, while following the existing truncation behavior where appropriate.

Written by the indexing model from the issue text.