GetPVCameraToWorldTransform always returns identity since V1.1.10 about microsoft-openxr-unreal

[fieldsJacksonG]

Looks like this was missed when we fixed the interop between winrt::guid's and FGuid's.

In a previous block in the UpdateDeviceLocations function, you can change the memcpy from this:

check(sizeof(SpatialGraphNodeSpaceCreateInfo.nodeId) == sizeof(FGuid));
FMemory::Memcpy(&SpatialGraphNodeSpaceCreateInfo.nodeId, &DynamicNode.GetValue().Key, sizeof(SpatialGraphNodeSpaceCreateInfo.nodeId));

to this:

check(sizeof(SpatialGraphNodeSpaceCreateInfo.nodeId) == sizeof(FGuid));
winrt::guid SourceGuid = WMRUtility::FGUIDToGuid(DynamicNode.GetValue().Key);
FMemory::Memcpy(&SpatialGraphNodeSpaceCreateInfo.nodeId, &SourceGuid, sizeof(SpatialGraphNodeSpaceCreateInfo.nodeId));

Currently the FGuid is being set in the FindDynamicNode function using the inverse WMRUtility::GUIDToFGuid function, which correctly transcribes the guid. When the FGuid is copied back to a winrt::guid - the memcpy (without using FGuidToGUID) changes the order of the underlying guid components and then the spatial graph functions are using a different guid that isn't traced back to the camera node.

Fix upcoming

[fieldsJacksonG]

#78