Bug: Missing device ad attributes

[rjtubi]

Problem/Opportunity

According to the https://docs.developer.comcast.com/docs/transitioning-from-legacy, $badger.adPlatform().deviceAdAttributes() can be replaced with Advertising.deviceAttributes() in Firebolt SDK, but the return values are mismatched.

Steps to reproduce

Run Advertising.deviceAttributes() in a real device.

Expected Behavior

It should return a string

Actual Behavior

It returns an empty object {}

Notes (Optional)

Device model: Xi6-A
SDK version: The latest v1.4.1