fix(big-play-button): component remains displayed after an error

This issue occurs when the `player` has the class `vjs-show-big-play-button-on-pause`
and playback has started and then been set to `pause` and an `error` occurs.

- Avoids displaying `big-play-button` on error

src/css/components/_big-play.scss

@@ -57,6 +57,6 @@
 }
 
 // Show big play button if video is paused and .vjs-show-big-play-button-on-pause is set on video element
-.vjs-has-started.vjs-paused.vjs-show-big-play-button-on-pause:not(.vjs-seeking, .vjs-scrubbing) .vjs-big-play-button {
+.vjs-has-started.vjs-paused.vjs-show-big-play-button-on-pause:not(.vjs-seeking, .vjs-scrubbing, .vjs-error) .vjs-big-play-button {
   display: block;
 }