fix(ios): cleanup search controller on close

[garymathews]

• Cleanup search controller state upon window close
  • Preventing search controller from maintaining focus after close

TEST CASE

const win_a = Ti.UI.createWindow({ title: 'Window A' });
const row = Ti.UI.createTableViewRow({ title: 'Open Window B' });
const table_a = Ti.UI.createTableView({ data: [ row ] });
const nav = Ti.UI.createNavigationWindow({ window: win_a });

row.addEventListener('click', e => {
    const win_b = Ti.UI.createWindow({ title: 'Window B' });
    const table_b = Ti.UI.createTableView({
        search: Ti.UI.createSearchBar(),
        data: [ Ti.UI.createTableViewRow({ title: 'Focus search then navigate back' }) ]
    });

    win_b.add(table_b);
    nav.openWindow(win_b);
});

win_a.add(table_a);
nav.open();

• Tap 'Open Window B'
• Tap search box
• Navigate to Window A
• Tap 'Open Window B'
  • Window B should display

JIRA Ticket
Issue #13070

[build]

	Warnings
⚠️	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.
📖	❌ 10 tests have failed There are 10 tests failing and 1162 skipped out of 20666 total tests.
📖	💾 Here's the generated SDK zipfile.

Tests:

Classname	Name	Time	Error
android.emulator.5.0.Titanium.Geolocation.methods	#reverseGeocoder() works via Promise return value (5.0.2)	2.002	Error: Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js)
android.emulator.5.0.Titanium.Geolocation.methods	#reverseGeocoder() works via function callback (5.0.2)	5.054	Error: expected false to be true at Assertion.fail (/node_modules/should/cjs/should.js:275:13) at Assertion.value (/node_modules/should/cjs/should.js:356:9) at Geolocation.<anonymous> (/ti.geolocation.test.js:645:32)
android.emulator.5.0.Titanium.Geolocation.methods	#forwardGeocoder() works via Promise return value (5.0.2)	5.047	Error: done() invoked with non-Error: {"source":{"accuracy":1,"locationServicesEnabled":true,"hasCompass":true,"lastGeolocation":"{\"latitude\":37.4219983,\"longitude\":-122.084,\"altitude\":5,\"accuracy\":20,\"heading\":0,\"speed\":0,\"timestamp\":1632250889000}","apiName":"Ti.Geolocation","bubbleParent":true,"__propertiesDefined__":true},"code":-1,"success":false} at /ti.geolocation.test.js:610:12
android.emulator.5.0.Titanium.Geolocation.methods	#forwardGeocoder() works via callback argument (5.0.2)	5.015	Error: expected false to be true at Assertion.fail (/node_modules/should/cjs/should.js:275:13) at Assertion.value (/node_modules/should/cjs/should.js:356:9) at Geolocation.<anonymous> (/ti.geolocation.test.js:585:32)
ios.ipad.Titanium.Blob	resize very large image (15.0.0)	11.054	Error: Timeout of 10000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js) postlayout@file:///Users/build/Library/Developer/CoreSimulator/Devices/0B3E2435-8B37-4A3D-B794-2A02D0029000/data/Containers/Bundle/Application/56322862-E226-4081-AFEC-243A066294AD/mocha.app/ti.blob.test.js:464:13
ios.ipad.Titanium.UI.WebView	.userAgent (15.0.0)	60.003	Error: Timeout of 60000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js)
ios.iphone.Titanium.Blob	resize very large image (15.0.0)	10.651	Error: Timeout of 10000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js) postlayout@file:///Users/build/Library/Developer/CoreSimulator/Devices/B2925BFB-EA99-4EBD-9A17-248A2DA2B125/data/Containers/Bundle/Application/81577197-C509-45A7-A8C5-699D524437C0/mocha.app/ti.blob.test.js:464:13
ios.iphone.Titanium.UI.View.borderRadius corners	1 value with shadow effect (15.0.0)	0.035	Error: expected 'Ti.UI.View' to match image ('snapshots/borderRadiusWithShadow_30px@3x~iphone.png') mismatched pixels. allowed: 0, actual: 18 value@file:///Users/build/Library/Developer/CoreSimulator/Devices/B2925BFB-EA99-4EBD-9A17-248A2DA2B125/data/Containers/Bundle/Application/81577197-C509-45A7-A8C5-699D524437C0/mocha.app/node_modules/should/cjs/should.js:356:23 postlayout@file:///Users/build/Library/Developer/CoreSimulator/Devices/B2925BFB-EA99-4EBD-9A17-248A2DA2B125/data/Containers/Bundle/Application/81577197-C509-45A7-A8C5-699D524437C0/mocha.app/ti.ui.view.test.js:1264:39
ios.iphone.Titanium.UI.WebView	.userAgent (15.0.0)	60.002	Error: Timeout of 60000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js)
ios.macos.Titanium.UI.WebView	.userAgent (11.5.2)	60.017	Error: Timeout of 60000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js)

Generated by 🚫 dangerJS against 6261f5d

[jquick-axway]

CR/FR: Pass

Tested on iOS 14.5 and iOS 12.4.

[lokeshchdhry]

FR Passed.