AP.user module unavailable in Android and iOS

Issue Summary

As per https://community.developer.atlassian.com/t/bug-its-no-longer-possible-to-get-current-user-in-jira-mobile-app/38737, in Android and iOS, all of methods available on AP.user (getCurrentUser, getTimeZone, getLocale) no longer invoke the callback given as an argument.

Steps to Reproduce

1. Run an app on iOS or Android that has a glance and calls `AP.user.getCurrentUser(userData => {console.log(`The user data is ${JSON.stringify(userData)}`)})`.

Expected Results

The log statement is called.

Actual Results

The log statement is NOT called.

Workaround

None