Downgraded initialization warning in Stylus Input plugin to Display severity to match other initialization warnings in the plugin.
#jira UE-142827
#rb paul.chipchase
#preflight 620ccaa4615db7478d575b08
#ROBOMERGE-AUTHOR: sebastian.nordgren
#ROBOMERGE-SOURCE: CL 19059904 in //UE5/Release-5.0/... via CL 19075009
#ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v921-19075845)
[CL 19076756 by sebastian nordgren in ue5-main branch]
#rb Sebastian.Nordgren
#jira
#rnx
#ROBOMERGE-SOURCE: CL 12224291 in //UE4/Release-4.25/... via CL 12224294
#ROBOMERGE-BOT: RELEASE (Release-4.25Plus -> Main) (v663-12210973)
[CL 12224301 by marc audy in Main branch]
#jira UE-90476
#rb paul.chipchase
#rnx
#ROBOMERGE-SOURCE: CL 12200747 in //UE4/Release-4.25/... via CL 12200770
#ROBOMERGE-BOT: RELEASE (Release-4.25Plus -> Main) (v662-12191386)
[CL 12200809 by sebastian nordgren in Main branch]
#jira none
#rb paul.chipchase
#ROBOMERGE-SOURCE: CL 12058343 in //UE4/Release-4.25/... via CL 12058346
#ROBOMERGE-BOT: RELEASE (Release-4.25Plus -> Main) (v657-12064184)
[CL 12076369 by sebastian nordgren in Main branch]
#jira none
#rb paul.chipchase
#ROBOMERGE-SOURCE: CL 12058182 in //UE4/Release-4.25/... via CL 12058183
#ROBOMERGE-BOT: RELEASE (Release-4.25Plus -> Main) (v657-12064184)
[CL 12076355 by sebastian nordgren in Main branch]
Previously, we created a single IRealTimeStylusSyncPlugin per IRealTimeStylus instance and attempted to switch the HWND that it was listening to, but this caused a deadlock when switching the HWND. Now we instead create an IRealTimeStylus and SyncPlugin per HWND and remove it when the window is closed. This removes the need for thread synchronization, and thus the deadlocks that could result.
There is an IRealTimeStylusSynchronization interface available, but my experiments with it did not resolve the issue and the documentation doesn't clarify its usage.
#jira UE-89401
#rb chris.gagnon
#ROBOMERGE-SOURCE: CL 12000316 in //UE4/Release-4.25/... via CL 12000797
#ROBOMERGE-BOT: RELEASE (Release-4.25Plus -> Main) (v656-11643781)
[CL 12001001 by sebastian nordgren in Main branch]
