Replace deprecated Intercom Android SDK functions

[rafaelbrendler-pixieset]

I was debugging some issues with the Intercom Messenger and noticed that your plugin is still using several deprecated functions from Intercom’s Android SDK.
Please update them to the recommended alternatives to prevent potential bugs and inconsistent behavior:

• registerUnidentifiedUser: Use loginUnidentifiedUser instead.
• registerIdentifiedUser: Use loginIdentifiedUser with a callback instead.
• updateUser: Use updateUser with a callback instead.
• displayMessenger: Use present() instead.
• displayConversationsList: Use present(IntercomSpace.Messages) instead.
• displayHelpCenter: Use present(IntercomSpace.HelpCenter) instead.
• displayHelpCenterCollections: Use presentContent(IntercomContent.HelpCenterCollections(ids)) instead.
• displayCarousel: Use presentContent(IntercomContent.Carousel(id)) instead.
• displaySurvey: Use presentContent(IntercomContent.Survey(id)) instead.
• reset: Call logout() instead.
• displayArticle: Use presentContent(IntercomContent.Article(id)) instead.

This information was found by reviewing Intercom.class, and most of these deprecations are also documented in Intercom’s changelog.