[TIMOB-7707] IOS :file system-file exists under the resource directory, but exists method returns a false

var resourcesFileDoesExist = Ti.Filesystem.getFile(Ti.Filesystem.resourcesDirectory, 'app.js');
var resourcesFileDoesNotExist = Ti.Filesystem.getFile(Ti.Filesystem.resourcesDirectory, 'this-file-does-not-exist.js');

var newFile = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory,'this-file-exists.js');
newFile.write("testing a file");

var appDataFileDoesExist = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, 'this-file-exists.js');
var appDataFileDoesNotExist = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, 'this-file-does-not-exist.js');

var label = Ti.UI.createLabel({
  color: '#FFF'
});
label.text = '*** Resources Dir: \nTest presence of file that exists => ' +
  resourcesFileDoesExist.exists() +
  '\nTest presence of file that does not exist => ' +
  resourcesFileDoesNotExist.exists() +
  '\n\n*** appData Dir: \nTest presence of file that exists => ' +
  appDataFileDoesExist.exists() +
  '\nTest presence of file that does not exist => ' +
  appDataFileDoesNotExist.exists();

var win = Ti.UI.createWindow({
  backgroundColor: '#000'
});
win.add(label);
win.open();