[TIMOB-28433] Android: Setting value resets keyboard layout (parity issue)

When setting the value of a text field (e.g. to force uppercase in our case), the keyboard resets, which is a pretty bad UX experience when entering numbers and letters in mix (like flight numbers). Test case:

const window = Ti.UI.createWindow({ backgroundColor: '#f0f0f0' });
const textField = Ti.UI.createTextField({ width: 300, height: 40, backgroundColor: '#fff' });

textField.addEventListener('change', event => {
    event.source.value = event.source.value.toUpperCase();
});

window.add(textField);
window.open();

This does only happen on Android - iOS works correctly. If there is a workaround to force uppercase, I am happy to use that instead! Android natively solves this by using textAllCaps in the EditText, but unfortunately thats not available in Titanium.