Stop GetWorkitemsByIdsFromAll from returning undefined in array if parent is not in AllWits.
This fixes an issue where the plan doesn't load if the parent isn't in the list of items in AllWits
@yanivsegev Sorry this fixes a bug which I hadn't caught in my testing.
Without this the plan is currently failing to load if parents are missing from AllWits.
Stop
GetWorkitemsByIdsFromAll
from returning undefined in array if parent is not inAllWits
. This fixes an issue where the plan doesn't load if the parent isn't in the list of items inAllWits