[FR]: Analytics in visionOS

### Description

Hi,

As mentioned in https://github.com/firebase/firebase-ios-sdk/issues/11779, I've encountered the same problem: No such module 'FirebaseAnalytics'.

Is there an ETA of Analytics available in visionOS? @ncooke3
Without Analytics, is there a way to track user growth metrics such as DAU, MAU, session duration, etc, within Firebase?

### API Proposal

_No response_

### Firebase Product(s)

Analytics

Start by reviewing the linked issue #11779 and the FirebaseAnalytics module reference to understand the existing visionOS limitation. Done means establishing whether Firebase Analytics supports visionOS and documenting the available path for DAU, MAU, and session-duration metrics.

Written by the indexing model from the issue text.