fix(ios): fire blur event when TabGroup focus is removed

[vijaysingh-axway]

https://jira.appcelerator.org/browse/TIMOB-28111

[build]

	Messages
📖	💾 Here's the generated SDK zipfile.
📖	✊ The commits in this PR match our conventions! Feel free to Rebase and Merge this PR when ready.
📖	✅ All tests are passing Nice one! All 12883 tests are passing. (There are 1079 skipped tests not included in that total)

Generated by 🚫 dangerJS against 0679643

[ssjsamir]

FR Passed: Tested using the following test case:

var basewin = Ti.UI.createWindow({
backgroundColor : 'white',
layout : 'vertical'
});
 
var baseWinBtn = Ti.UI.createButton({
title : 'Push next window (tab.open(win))',
top : 60
});
basewin.add(baseWinBtn);
 
 
var baseWinBtn2 = Ti.UI.createButton({
title : 'Open another window (win.open())',
top : 120
});
basewin.add(baseWinBtn2);
 
var baseWinBtn3 = Ti.UI.createButton({
title : 'Show Alert',
top : 180
});
basewin.add(baseWinBtn3);
 
baseWinBtn.addEventListener('click', function() {
var indWin = Ti.UI.createWindow({
backgroundColor : 'red'
});
 
tab.open(indWin);
 
var alertBtn = Ti.UI.createButton({
top: 60,
title :'click to get alert'
});
alertBtn.addEventListener('click',function(){
Ti.UI.createAlertDialog({
title : "test",
message : "test msg",
buttonNames : ['OK']
}).show();
});
indWin.add(alertBtn);
 
var closeBtn = Ti.UI.createButton({
top: 120,
title :'Close Window'
});
closeBtn.addEventListener('click',function(){
tab.close(indWin);
});
indWin.add(closeBtn);
 
});
 
 
baseWinBtn2.addEventListener('click', function() {
var indWin = Ti.UI.createWindow({
backgroundColor : 'red'
});
 
indWin.open(); //{modal: true, animation: true}
 
var closeBtn = Ti.UI.createButton({
title :'Close button'
});
closeBtn.addEventListener('click',function(){
indWin.close();
});
indWin.add(closeBtn);
});
 
baseWinBtn3.addEventListener('click', function() {
Ti.UI.createAlertDialog({
title : "test",
message : "test msg",
buttonNames : ['OK']
}).show();
});
 
var tabGroup = Ti.UI.createTabGroup({
title : '',
titleColor : "#bbb",
tintColor : "#bbb",
navBarHidden : true
});
var tab = Ti.UI.createTab({
title : 'tab1',
window : basewin
});
tabGroup.addTab(tab);
var tab2 = Ti.UI.createTab({
title : 'tab2',
window : Ti.UI.createWindow({backgroundColor : 'white'})
});
tabGroup.addTab(tab2);
tabGroup.open();
tabGroup.addEventListener('focus',function(e){
Ti.API.info('in tabgroup focus');
});
 
tabGroup.addEventListener('blur',function(e){
Ti.API.info('in tabgroup blur');
});

Test Environment

MacOS Big Sur: 11.0 Beta 9
Xcode: 12.2 Beta
Java Version: 1.8.0_242
Android NDK: 21.3.6528147
Node.js: 12.18.1
""NPM":"5.0.0","CLI":"8.1.1""
iphone 11 (14.2) Sim