fix(android): guard access to some toast properties

[hansemannn]

JIRA: https://jira.appcelerator.org/browse/TIMOB-28448

Prevents error logs like these that could become more severe in future Android versions:

Test case:

const window = Ti.UI.createWindow();
window.addEventListener('open', () => {
    Ti.UI.createNotification({
        title: 'Hello world',
        duration: Ti.UI.NOTIFICATION_DURATION_SHORT
    }).show();
});
window.open();

[build]

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

	Messages
📖	✊ The commits in this PR match our conventions! Feel free to Rebase and Merge this PR when ready.
📖	❌ 5 tests have failed There are 5 tests failing and 957 skipped out of 15270 total tests.
📖	🎉 Another contribution from our awesome community member, hansemannn! Thanks again for helping us make Titanium SDK better. 👍

Tests:

Classname	Name	Time	Error
android.emulator.Titanium.UI.NavigationWindow	basic open/close navigation (5.0.2)	10.006	Error: Timeout of 10000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js)
android.emulator.Titanium.UI.TabGroup	add Map.View to TabGroup (5.0.2)	15.034	Error: Timeout of 15000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js)
android.emulator.Titanium.UI.View	"after all" hook for "rgba fallback" (5.0.2)	23.711	Error: Timeout of 10000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js)
android.emulator.Titanium.UI.View	"after each" hook for "getOrCreateView() should always return a View" (5.0.2)	13.693	Error: Timeout of 10000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js)
ios.iphone.Titanium.UI.iOS.CollisionBehavior.example	works (14.4.0)	15.001	Error: Timeout of 15000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js)

Generated by 🚫 dangerJS against aafbdbf

[jquick-axway]

CR: Pass

[lokeshchdhry]

FR Passed.