Platform-specific constructors inconsistency

[EdricChan03]

It appears that some actual classes' constructors are marked as internal:

https://github.com/GitLiveApp/firebase-kotlin-sdk/blob/be99f63ddee58328f9ca8acc873a82e397c40d5a/firebase-auth/src/androidMain/kotlin/dev/gitlive/firebase/auth/user.kt#L11

https://github.com/GitLiveApp/firebase-kotlin-sdk/blob/be99f63ddee58328f9ca8acc873a82e397c40d5a/firebase-database/src/androidMain/kotlin/dev/gitlive/firebase/database/database.kt#L59

https://github.com/GitLiveApp/firebase-kotlin-sdk/blob/be99f63ddee58328f9ca8acc873a82e397c40d5a/firebase-functions/src/androidMain/kotlin/dev/gitlive/firebase/functions/functions.kt#L28

https://github.com/GitLiveApp/firebase-kotlin-sdk/blob/be99f63ddee58328f9ca8acc873a82e397c40d5a/firebase-functions/src/jsMain/kotlin/dev/gitlive/firebase/functions/functions.kt#L25

while there are others that are effectively public:

https://github.com/GitLiveApp/firebase-kotlin-sdk/blob/be99f63ddee58328f9ca8acc873a82e397c40d5a/firebase-auth/src/androidMain/kotlin/dev/gitlive/firebase/auth/user.kt#L60

https://github.com/GitLiveApp/firebase-kotlin-sdk/blob/be99f63ddee58328f9ca8acc873a82e397c40d5a/firebase-auth/src/androidMain/kotlin/dev/gitlive/firebase/auth/user.kt#L75

https://github.com/GitLiveApp/firebase-kotlin-sdk/blob/be99f63ddee58328f9ca8acc873a82e397c40d5a/firebase-firestore/src/androidMain/kotlin/dev/gitlive/firebase/firestore/firestore.kt#L40

https://github.com/GitLiveApp/firebase-kotlin-sdk/blob/be99f63ddee58328f9ca8acc873a82e397c40d5a/firebase-storage/src/androidMain/kotlin/dev/gitlive/firebase/storage/storage.kt#L49

Context

I would like to use the constructors to pass in the Android variant while I incrementally migrate my existing codebase to this library, and I noticed this inconsistency while attempting to add a constructor overload that takes in the Android variant:

class MyRepository(
  user: FirebaseUser, // Common variant
  firestore: FirebaseFirestore // Common variant
) {
  constructor(
    androidUser: com.google.firebase.auth.FirebaseUser,
    androidFirestore: com.google.firebase.firestore.FirebaseFirestore
  ) : this(user = FirebaseUser(androidUser), firestore = FirebaseFirestore(androidFirestore))
}

The FirebaseUser(androidUser) constructor usage in MyRepository's secondary constructor (shown above) results in a "Cannot access '<init>': it is internal in 'FirebaseUser'" error in the IDE.