Ambient Occlusion not Applied in Buffer Visualization Using Forward Shading

Ambient Occlusion not applied in Buffer Visualization while Forward shading is enabled. In the "Lit" view mode AO is still applied.

This is working as expected in 4.21 CL# 4753647.

Found in 4.22 CL# 6063286 and 4.23 CL# 6398642

This is a regression.

1. Open attached project
2. Open the level "TestMap"
3. Set the view mode to Buffer Visualization for AO

Results:
AO is applied to the scene outside of the view mode, but when in the view mode no AO is applied to the scene

Expected:
It would show AO as it did previously