ContentExamples: BlueprintRenderToTarget heightfield painter renders black and has no functionality

Observed on all native platforms

Repro:

1. Download ContentExamples from the launcher and package it.
2. Open the package to the BlueprintRenderToTarget map
3. Move to the left pool
4. Try to interact with it.

Result:
The pool is static, renders black, and has no interactable functionality.

Expected:
Heightfield painter works.

Frequency:
100%