C4702 generated for compilation of PixelStreaming2RTCModule.cpp when building installed editor

Steps to Reproduce

Reproed on our instance by running a normal editor install build script:

call Engine\Build\BatchFiles\RunUAT.bat BuildGraph -script=Engine/Build/InstalledEngineBuild.xml -target="Make Installed Build Win64" -nosign -set:GameConfigurations=Development;Shipping -set:WithWin64=true -set:WithAndroid=false -set:WithDDC=true -set:WithLinux=true -set:WithLinuxArm64=false -set:WithIOS=false -set:WithTVOS=false -set:WithMac=false -set:WithClient=true -set:WithServer=true -set:WithFullDebugInfo=true -nop4 -BUILDMACHINE