Refactored FindField into FindUField and FindFProperty to avoid confusion caused by the fact that FindField<UField> will no longer return FProperties.
#jira UE-90683
#rb Steve.Robb
#tests Basic editor functionality test, cooked and ran PC client and server, bot soak tests for two hours
#ROBOMERGE-OWNER: robert.manuszewski
#ROBOMERGE-AUTHOR: robert.manuszewski
#ROBOMERGE-SOURCE: CL 12190998 in //UE4/Release-4.25/... via CL 12190999
#ROBOMERGE-BOT: RELEASE (Release-4.25Plus -> Main) (v661-12148976)
[CL 12191300 by robert manuszewski in Main branch]
#rb none
#ROBOMERGE-OWNER: matt.kuhlenschmidt
#ROBOMERGE-AUTHOR: matt.kuhlenschmidt
#ROBOMERGE-SOURCE: CL 11382968 via CL 11382988 via CL 11382990
#ROBOMERGE-BOT: (v654-11333218)
[CL 11383722 by matt kuhlenschmidt in Main branch]
#rnx
#rb none
#ROBOMERGE-SOURCE: CL 10869241 via CL 10869527 via CL 10869904
#ROBOMERGE-BOT: (v613-10869866)
[CL 10870586 by ryan durand in Main branch]
Behavior was changed in 4691984.
SupportStationarySkylight should not be used to conditionally create a sky or not. Sky is always used for default environment diffuse (just can be rendered in non base pass but environment pass depending on whether lighting/sky is static/stationary of movable).
A SphereReflectionCapture is not enough to get diffuse light (it can only be used for specular). Which is what we see in this JIRA bug.
Fix is to always create the sky and just make it visible or not (the new behavior added in 4691984 and that is correct)
#rb Jurre.deBaare
#ROBOMERGE-SOURCE: CL 5683666 via CL 5683884
[CL 5683886 by sebastien hillaire in Main branch]
#fix Add bUseImageBasedLighting flag to preview scene, so new behaviour when hiding the enviroment is that IBL is still on
#misc Fixed up comment and readded missing code from old merge
#jira UE-54102
#rb Thomas.Sarkanen
[CL 4691984 by Jurre deBaare in Dev-Anim branch]
