The Datasmith GameThread + DirectLink initialization was trigerring some ensure which where sometimes not handled properly and could cause a crash.
We were not properly tagging Unreal's main thread and the dcc's main thread, causing those thread to compete for the main thread role.
#jira UE-148108
#rb JeanLuc.Corenthin Johan.Duparc
#preflight 62a8e13adc04d52792d011ef
#lockdown Simon.Tourangeau
#ROBOMERGE-AUTHOR: benoit.deschenes
#ROBOMERGE-SOURCE: CL 20655640 in //UE5/Release-5.0/... via CL 20657743
#ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v955-20579017)
[CL 20661508 by benoit deschenes in ue5-main branch]
#rnx
#rb none
#ROBOMERGE-SOURCE: CL 10869240 via CL 10869516 via CL 10869902
#ROBOMERGE-BOT: (v613-10869866)
[CL 10870584 by ryan durand in Main branch]