Add default value to inline payloads

If we try to set an inline result when it has not yet been
accessed in settings, nothing is read from Settings.
Thus, include a default value for a fallback.

Manual merge for: ag/2588219/

Change-Id: I3b8eea4f82764852cea642db4455ba57f10a7d37
Fixes: 63955012
Test: robotests