BHV-15468: VideoPlayer Video is terminated due to lack of virtual memory

### Issue:
VideoPlayer was calling applyStyle on the progressStatus control when it had no node, resulting in an endlessly concatenating style string, partly because the framework does not resolve styles, pre-attachment to DOM.
### Fix:
check if progressStatus has a node, before calling applyStyle

Enyo-DCO-1.1-Signed-off-by: Krishna Rangarajan <krishna.rangarajan@lge.com>



https://github.com/enyojs/moonstone/pull/1692 takes care of it.