Custom Stencil Is Not Rendering In UI Materials

Widgets with a UI Material that uses Custom Stencil will not render meshes with a set stencil. This is working as expected in 4.19 CL# 4033788.

Found in 4.20 CL# 4369336, 4.21 CL# 4541578, and 4.22 CL# 4614594

This is a regression. 

1. Open the Editor
2. Go to project settings and set  Custom Depth-Stencil Pass to "Enabled with Stencil"
3. Place any mesh in the level and set its stencil to 1
4. Create a UI Material that uses Scene Texture set to Custom Stencil for final color
5. Create a Widget with an image large enough to cover the mesh set to the UI Material.
6. Play In another Editor window

Results:
With the mesh behind the Widget it will not be rendered

Expected:
The mesh would be rendered like the material next to it