fix(ios): selectedBackgroundGradient deprecation shown when not using it

[nicolomonili]

fix for #12969

jira: https://jira.appcelerator.org/browse/TIMOB-28543

[build]

	Warnings
⚠️	Tests have failed, see below for more information.
⚠️	Commit 09e970d09d822e74e0f66b0a704c9b741ce222f8 has a message "Update TiUITableViewRowProxy.m to fix warning fix for #12969" giving 2 errors: subject may not be empty type may not be empty

	Messages
📖	❌ 11 tests have failed There are 11 tests failing and 1162 skipped out of 20653 total tests.
📖	🚨 This PR has one or more commits with warnings/errors for commit messages not matching our configuration. You may want to squash merge this PR and edit the message to match our conventions, or ask the original developer to modify their history.
📖	🎉 Another contribution from our awesome community member, nicolomonili! Thanks again for helping us make Titanium SDK better. 👍
📖	💾 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)	2.115	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)	5.01	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)	5.041	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\":1633458831000}","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)	5.019	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)
android.emulator.5.0.Titanium.UI.View	"after all" hook for "rgba fallback" (5.0.2)	20.447	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.5.0.Titanium.UI.View	"after each" hook for "getOrCreateView() should always return a View" (5.0.2)	10.438	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.5.0.Titanium.UI.WebView	basic authentication should work properly (5.0.2)	30.018	Error: Timeout of 30000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js)
android.emulator.main.Titanium.Geolocation.methods	#forwardGeocoder() works via callback argument (12)	5.011	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)
android.emulator.main.Titanium.UI.WebView	basic authentication should work properly (12)	30.005	Error: Timeout of 30000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js)
ios.ipad.Titanium.UI.WebView	basic authentication should work properly (15.0.0)	30	Error: Timeout of 30000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js)
ios.macos.Titanium.UI.WebView	basic authentication should work properly (11.5.2)	30.008	Error: Timeout of 30000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (app.js)

Generated by 🚫 dangerJS against bcf8e35

[jquick-axway]

CR: Pass

[ewanharris]

@nicolomonili, could you please sign the CLA

[lokeshchdhry]

FR Passed.