Ensure structured name exists when creating a new delta

When I was able to repro the NPE, the RawContactDelta had the five
entries that were ensured in createNewRawContactDelta. The only
likely cause is mIntentExtras is either null or empty so
nothing is copied over and the entries are empty.

Test:
Opened the editor for a single read-only contact a bunch of times.

Bug: 31874062
Change-Id: I7f47ff766457f3daf2099344661a3f5caf92388d