[mediaframe applet] Enable wrapping of fill mode description in config UI
Summary:
Especially with some translations the text will not fit on a single line.
BUG: 393232
Reviewers: Plasma, aspotashev
Reviewed By: aspotashev
Subscribers: aspotashev, plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D12307