EPhysicalSurface metadata is not updated with Physical Surface Project Settings

Changes to 'Project Settings -> Physics -> Physical Surface' do not update the Enum metadata of the EPhysicalSurface until Project Settings is re-opened.

EPhysicalSurface Enum metadata is set in UPhysicsSettings::LoadSurfaceType. This should be called when commiting changes(FPhysicalSurfaceList::OnCommitChange) similar to how it is called when opening Project Settings (FPhysicalSurfaceList::RefreshPhysicalSurfaceList).

Open Project Settings -> Physics -> Physical Surface.

Enter a name for SurfaceType1

Create a physics material and set its surface.

Notice the name set for SurfaceType1 is not available.

Close and Re-Open Project Settings.

Set the physics materials surface.

Notice the surface name is now available.