Add getAllCollapsedRatTypes to NetworkTemplate

This is a partial cherry-pick of ag/10293594

Test: TH
Bug: 129082217

Merged-In: I726e74f5c63a6ed456cb13ea259b58c7a33bec76
Change-Id: I726e74f5c63a6ed456cb13ea259b58c7a33bec76
1 file changed