Apply scr. policy actions from deleted assignments

These actions were originally applied only when originating from
zero and plus assignments sets. But we need to execute scripts also
on assignment deletion.

model/model-impl/src/main/java/com/evolveum/midpoint/model/impl/lens/projector/policy/PolicyRuleScriptExecutor.java

@@ -58,7 +58,8 @@ public <O extends ObjectType> void execute(@NotNull ModelContext<O> context, Tas
             }
             DeltaSetTriple<EvaluatedAssignmentImpl<?>> triple = ((LensContext<?>) context).getEvaluatedAssignmentTriple();
             if (triple != null) {
-                for (EvaluatedAssignment<?> assignment : triple.getNonNegativeValues()) {
+                // We need to apply rules from all the assignments - even those that were deleted.
+                for (EvaluatedAssignment<?> assignment : triple.getAllValues()) {
                     for (EvaluatedPolicyRule rule : assignment.getAllTargetsPolicyRules()) {
                         executeRuleScriptingActions(rule, context, task, result);
                     }