Library : Edit/Replace Media with update in Layouts should not touch Dynamic Playlist Widgets

[PeterMis]

As it stands, when we edit Media duration in Library and save it with updateInLayouts checkbox, it will adjust the Widget duration for all Widgets associated with the edited Media item.

This can cause potential issues with dynamic Playlists, as in the task that should update Widget durations on the dynamic Playlist, we attempt to compare Widget duration with Media duration, which will always be equal.
As such, the Playlist in this case is never set to update the duration, resulting in the incorrect Playlist duration being displayed in the Playlist grid.

(This should be adjusted in the next 2.3 release as well)