'media-control-notransition' class works wrong

[sapolio]

This ussue duplicates one from clappr repo

Starting with commit 41b2897, the MediaControl setSeekPercentage method does it wrong removing the 'media-control-notransion' class.
This negatively affects the experience of dragging the seek-bar scrubber.
Adding this class in the rendering method is also useless.