fix(android): amend ListView marker behaviour

[garymathews]

• Allow markers to be added prior to item or section existing
• Prevent errors from occurring when invalid markers are added
• Validate list item is visible before firing marker event

TEST CASE

const win = Ti.UI.createWindow({ backgroundColor: 'gray' });

const items = [];
for (let i = 0; i < 100; i++) {
	items.push({ properties: { title: `Item #${i}` }});
}

const listView = Ti.UI.createListView({
	sections: [ Ti.UI.createListSection({ items }) ]
});

// Add valid marker.
listView.addMarker({
	sectionIndex: 0,
	itemIndex: 32
});

// Add invalid marker.
listView.addMarker({
	sectionIndex: 1,
	itemIndex: 1
});

// Add invalid marker.
listView.addMarker({
	sectionIndex: 0,
	itemIndex: -1
});

// Add invalid marker.
listView.addMarker({
	sectionIndex: -1,
	itemIndex: 1
});

// Add invalid marker.
listView.addMarker({
	sectionIndex: 0,
	itemIndex: 101
});

listView.addEventListener('marker', e => {
	alert(JSON.stringify({
		sectionIndex: e.sectionIndex,
		itemIndex: e.itemIndex
	}, null, 1));
});

win.add(listView);
win.open();

JIRA Ticket

[build]

	Fails
🚫	Tests have failed, see below for more information.

	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.
📖	❌ 1 tests have failed There are 1 tests failing and 899 skipped out of 14870 total tests.

Tests:

Classname	Name	Time	Error
android.emulator.Titanium.UI.View	"after all" hook (5.0.2)	10.011	Error: timeout of 10000ms exceeded at Titanium.<anonymous> (/ti-mocha.js:6535:53723)

Generated by 🚫 dangerJS against d12a720

[jquick-axway]

CR: Pass

[ssekhri]

@garymathews with the changes in the PR the marker event on the listview is not fired if initially the marker is added for a section that does not exist but that section is added later and even then upon scrolling to the section,row with the marker the event is not fired. It used to work with 9.2.2.GA.
Check the sample code on the comment in the jira ticket https://jira.appcelerator.org/browse/TIMOB-28293?focusedCommentId=457925&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-457925

[ssekhri]

FR Passed.
Verified on:
Mac OS: 10.15.4
SDK: 10.0.0.v20210105134342
Appc CLI: 8.1.1
JDK: 11.0.6
Node: 12.16.1
Studio: 6.0.0.202005141803
Pixel 3 XL(v11.0) emulator