Add new unit test for changing standard template region material #1292

Job	Run time
Documentation Style Check	12s
Code style	1m 3s
Building library documentation	32m 36s
Build and Smoke tests (windows-latest, 3.8)	38s
Build and Smoke tests (windows-latest, 3.9)	38s
Build and Smoke tests (windows-latest, 3.10)	33s
Build and Smoke tests (windows-latest, 3.11)	40s
Tests and coverage	34m 26s
Package library	15s
Deploy development documentation	0s
Release project	0s
Doc stable version deploy	0s
	1h 11m 1s

Provide feedback