fix(android): fix event from already active tab in bottom style TabGroup

[ypbnv]

JIRA: https://jira.appcelerator.org/browse/TIMOB-27513

Description:
Selecting an already active tab in a TabGroup with the bottom style navigation fires the selected
event for the tab. This does not match the default style.
Note: This only happens when a user clicks on the TabController. Calling setActiveTab() does not trigger the redundant event, so we can't have a unit test for the scenario.

Test case:
app.js

var mainWin = Ti.UI.createWindow({ layout: 'vertical' }),
	defaultTabGroup = Ti.UI.createTabGroup({ tabs: [createTab('Def1'), createTab('Def2')] }),
	bottomStyleTabGroup = Ti.UI.createTabGroup({ tabs: [createTab('Bot1'), createTab('Bot2')],
		style: Ti.UI.Android.TABS_STYLE_BOTTOM_NAVIGATION }),
	button1 = Ti.UI.createButton({ title: 'Default' }),
	button2 = Ti.UI.createButton({ title: 'Bottom Style' });
button1.addEventListener('click', function() {
	defaultTabGroup.open();
});
button2.addEventListener('click', function() {
	bottomStyleTabGroup.open();
});
mainWin.add([button1, button2]);
mainWin.open();

function createTab(title) {
	var newWindow = Ti.UI.createWindow();
	var tab = Ti.UI.createTab({ title: title,
		window: newWindow });
	tab.addEventListener('selected', function(e) {
		Ti.API.info('Tab selected');
	});
	return tab;
}

[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 6636 tests are passing. (There are 697 skipped tests not included in that total)

Generated by 🚫 dangerJS against 7d2163f

[JOSHUASTJOHN]

Can someone please tell me how to use this GitHub. I don't even have the slidest idea what it is

[ssjsamir]

FR Passed: Using the test case provided above. Unable to see redundant events.

Environment

MacOS Catalina: 10.15.5 Beta 
Xcode: 11.4
Java Version: 1.8.0_131
Android NDK: 21.1.6273396-beta2
Node.js: 10.16.3
""NPM":"5.0.0-1","CLI":"8.0.0-master.10""
Android API 25 Sim