InternetPreferenceController V2 (3/n)

Add DataSubscriptionRepository, when cellular connection,
show the active subscription name.

Bug: 339884322
Flag: com.android.settings.flags.internet_preference_controller_v2
Test: manual - on Internet
Test: unit test
Change-Id: If2a3e7f8df1b1ed89bc760ec5165182b3e9b64a8