Merge "No longer export CallSubjectDialog" into sc-dev am: 3c9c9f1aca am: 49808fec17 am: a40779d5a2

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

Change-Id: Iae6ed61f8a8bba31545b1b8fa7f04c9fcadf3cf1