Merge "No longer export CallSubjectDialog" into sc-dev am: 3c9c9f1aca am: 273acf399f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Contacts/+/17008939

Change-Id: Ic705ec6acf652c3839ac394703521f90ba9b1ca2