fix: Don't apply seek range while content is still loading (#2849)
fix: Don't apply seek range while content is still loading (#2849)

Up until we load some content and seek to the start time, we should avoid applying the seek range.  Otherwise, for a slow-loading live stream, we could end up seeking to the beginning of the seek range while waiting to begin playback at the end of the range.  This doesn't seem to happen on desktops, but on some smart TVs, setting video.currentTime will not be immediately reflected, leaving a race condition that only VideoWrapper will properly resolve.

Closes #2848 
Closes #2748 
shaka-project/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,tvoli/shaka-player,tvoli/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,shaka-project/shaka-player