Update userId when trying to add a notification for a device registered to another user

• Type: Story
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: 7.0.X EE, 7.1.X, Master
• Component/s: Push Notifications
• Labels: None
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed

Push platforms only support 1 user per mobile phone (it doesn't make sense to send duplicated notifications) and currently in the Liferay Push Portlet if a user tries to register a phone already registered we just log that it's already in the system.

We should update the registration to reflect the current user registered with that token.