update: fix combined nb test

Author: VsevolodX

tests/cypress/e2e/health_checks/combined/create_and_optimize_ni_graphene_interface_using_automatic_imports.feature

@@ -39,6 +39,9 @@ Feature: Combined test to create interface with relaxation and optimization
       | name | index |
       | C2(001)-Ni4(001), Interface, Strain 0.244pct Optimized XY | 3 |
 
+    # Remove optimized material from list to avoid conflicts
+    Then I delete materials with index "3"
+
     # Relax with EMT
     # Open JupyterLite
     When I open JupyterLite Transformation dialog
@@ -57,4 +60,4 @@ Feature: Combined test to create interface with relaxation and optimization
     # Final verification
     Then material with following name exists in state
       | name | index |
-      | C2(001)-Ni4(001), Interface, Strain 0.244pct, Relaxed with EMT | 4 |
+      | C2(001)-Ni4(001), Interface, Strain 0.244pct, Relaxed with EMT | 3 |