[Android] Update reference to protobuf files

Summary:
Update android build to reference new proto location

https://linear.app/comm/issue/ENG-1231

Depends on D4993

Test Plan: Android CI passes

Reviewers: atul, abosh, varun

Reviewed By: atul

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D4994