BasePlayerController: trackfile route not enough filtered

[mreyk]

Route "/trackfile/{id}.{ext}" in TrackFileController of BasePlayerController used to play video files in player.
This function in the controller does not have in mind if the multimedia object is published if the access is from frontend or if the user is logged in if the access is from the backoffice.

https://github.com/campusdomar/PuMuKIT2/blob/2.4.x/src/Pumukit/BasePlayerBundle/Controller/TrackFileController.php#L15-L42