[TIMOB-28507] iOS: Ti.App "arguments" property and getArguments() method are not defined as of 10.0.0

*Summary:* As of Titanium 10.0.0, the [Ti.App.arguments](https://titaniumsdk.com/api/titanium/app.html#arguments) property and the deprecated [Ti.App.getArguments()](https://titaniumsdk.com/api/titanium/app.html#getarguments) method are no longer defined. This is a regression and makes fetching an iOS app's arguments via a cold start impossible. *Steps to reproduce:*

Build and run the below code on iOS.

Look at the log.

// app.js
console.log(@@@ Ti.App.arguments: ${JSON.stringify(Ti.App.arguments, null, 4)});
console.log(@@@ Ti.App.getArguments(): ${JSON.stringify(Ti.App.getArguments(), null, 4)});

*Result:* The "arguments" property wrongly returns undefined and the getArguments() method causes a crash because that method no longer exists.

[INFO]  @@@ Ti.App.arguments: undefined
[ERROR] console.log("@@@ Ti.App.getArguments(): ".concat(JSON.stringify(Ti.App.getArguments(), null, 4)));
[ERROR] TypeError: Ti.App.getArguments is not a function. (In 'Ti.App.getArguments()', 'Ti.App.getArguments' is undefined)

*Expected Result:* The arguments property and getArguments() method must always return an object. If no arguments were used to launch the object, then it will be an empty object printed below as {}.

[INFO]  @@@ Ti.App.arguments: {}
[INFO]  @@@ Ti.App.getArguments(): {}