feat(android): parity for optionbar index

[m1ga]

fixes #13323

Adds parity for setting the optionBar.index to -1 to deselect everything.

example

const win = Ti.UI.createWindow();
const optionBar = Ti.UI.createOptionBar({
  labels: [ 'Option 1', 'Option 2', 'Option 3' ]
});
const btn = Ti.UI.createButton({
  title:"reset", bottom: 10
})
optionBar.addEventListener('click', (e) => {
  Ti.API.info(`Option ${e.index} was selected.`);
});
btn.addEventListener('click', (e) => {
  optionBar.index = -1;
});
win.add([optionBar,btn]);

win.open();

[caspahouzer]

All good. Do we need another reviewer?

[caspahouzer]

Bildschirmaufnahme.2022-03-23.um.16.41.53.mov

[caspahouzer]

❤️