[AC-5049] iOS: continueactivity event not being fired when user taps Core Spotlight search item

var searchableIndex = Ti.App.iOS.createSearchableIndex(); 

if (searchableIndex.isSupported()) {
    Ti.App.iOS.addEventListener('continueactivity', onContinueactivity);
}

function onContinueactivity(e) {
    var modelId;
    Titanium.API.info('Ti.App.iOS:continueactivity' + e.activityType);
    
    // A Spotlight search result was opened
    if (e.activityType === 'com.apple.corespotlightitem') {
       //opens specific screen 
       modelId = e.searchableItemActivityIdentifier;
    }
}