[TIMOB-18294] iOS: initialPlaybackTime property for video player does not work consistently for local video

This is not a regression as the issue happens with older SDK as well (tested as far back as 3.3.0.GA) The initialPlaybackTime property of video player does not work consistently. The issue seems intermittent but for me the scenario created through the code below reproduced the issue almost every time. The issue seems to occur only for local video but does work for remote video. The issue does not occur on Android. Steps to Reproduce: 1. Create a project with code below and install it on iOS device 2. In the app click on any row in the tableview 3. The video should play in the new window. Check the video time. Note: When the app did not had a tableview and the video was on the starting window then the issue was intermittent. Actual Result: The video plays from the very start despite of initialPlaybackTime defined as 20 seconds. Expected Result: The video should start to play from 20 seconds.

var win=Ti.UI.createWindow({
	backgroundColor:'white'
});

var tableData = [ {title: 'Row 1'}, {title: 'Row 2'} ];
var table=Ti.UI.createTableView({
	data: tableData
});

win.add(table);

table.addEventListener("click", function(e) {
	var win1=Ti.UI.createWindow({
		backgroundColor:'white'
	});
	
	var vPlayer = Ti.Media.createVideoPlayer({
	        url: "AppcDemo.mp4",
	        initialPlaybackTime: 20000,
	        mediaControlStyle: Ti.Media.VIDEO_CONTROL_DEFAULT,
	        mediaTypes: Titanium.Media.VIDEO_MEDIA_TYPE_VIDEO
	    });
	vPlayer.addEventListener("load", function(e) {
	        setTimeout(function() {
	            vPlayer.currentPlaybackTime = 193000;
	        }, 15000);
    });
    win1.add(vPlayer);
    win1.open();
});
win.open();