Fix for Maya LiveLink UI not working for versions of Maya older than 2018
#jira UE-71917
#rb simon.therriault
#ROBOMERGE-OWNER: ben.marsh
#ROBOMERGE-AUTHOR: daniel.rahier
#ROBOMERGE-SOURCE: CL 7668684 in //UE4/Release-4.23/... via CL 7668686
#ROBOMERGE-BOT: BUILD (Main -> Dev-Build) (v388-7785529)
[CL 7797844 by daniel rahier in Dev-Build branch]