Ray Traced Ambient Occlusion Uses Resources Even if AO Intensity is 0

Ray traced Ambient Occlusion is still active even when Ambient Occlusion Intensity is set to 0 in the Post Process Volume.

Found in 4.22 CL# 7053642, 4.23 CL# 8115738, 4.24 CL# 8124506

1. Open the Editor in DX12.
2. Enable Ray Tracing and restart the Editor.
3. Place meshes into the scene so that ray traced ambient occlusion visible.
4. Place a Post Process Volume into the scene and set "Ambient Occlusion Intensity" to 0
5. Use "Stat GPU" in the console

Results:
RT AO is still taking up resources despite the intensity betting set to 0

Expected:
RT AO wouldn't be using resources