Stop auto-assigning task archetypes in tests

Generally, in tests we do not have all the archetypes imported.
So (maybe temporarily) we do not auto-assign them.

This fixes some failing story tests.

model/model-test/src/main/java/com/evolveum/midpoint/model/test/AbstractModelIntegrationTest.java

@@ -232,6 +232,9 @@ public void initSystem(Task initTask, OperationResult initResult) throws Excepti
 
         // This is generally useful in tests, to avoid long waiting for bucketed tasks.
         bucketingManager.setFreeBucketWaitIntervalOverride(100L);
+
+        // We generally do not import all the archetypes for all kinds of tasks (at least not now).
+        genericTaskHandler.setAvoidAutoAssigningArchetypes(true);
     }
 
     @Override

repo/repo-common/src/main/java/com/evolveum/midpoint/repo/common/task/task/GenericTaskExecution.java

@@ -100,6 +100,9 @@ public TaskRunResult run(OperationResult result) throws TaskException {
     }
 
     private void setupTaskArchetypeIfNeeded(OperationResult result) throws ActivityExecutionException {
+        if (genericTaskHandler.isAvoidAutoAssigningArchetypes()) {
+            return;
+        }
         try {
             RunningTask task = getRunningTask();
             String defaultArchetypeOid = activityTree.getRootActivity().getHandler().getDefaultArchetypeOid();

repo/repo-common/src/main/java/com/evolveum/midpoint/repo/common/task/task/GenericTaskHandler.java

@@ -41,6 +41,12 @@ public class GenericTaskHandler implements TaskHandler {
      */
     @NotNull private final Map<String, GenericTaskExecution> currentTaskExecutions = Collections.synchronizedMap(new HashMap<>());
 
+    /**
+     * Should we avoid auto-assigning task archetypes based on activity handler?
+     * This is useful for restricted environments (like in tests) when there are no archetypes present.
+     */
+    private boolean avoidAutoAssigningArchetypes;
+
     /** Common beans */
     @Autowired private CommonTaskBeans beans;
     @Autowired private TaskManager taskManager;
@@ -130,4 +136,12 @@ public void registerLegacyHandlerUri(String handlerUri) {
     public void unregisterLegacyHandlerUri(String handlerUri) {
         beans.taskManager.unregisterHandler(handlerUri);
     }
+
+    public boolean isAvoidAutoAssigningArchetypes() {
+        return avoidAutoAssigningArchetypes;
+    }
+
+    public void setAvoidAutoAssigningArchetypes(boolean avoidAutoAssigningArchetypes) {
+        this.avoidAutoAssigningArchetypes = avoidAutoAssigningArchetypes;
+    }
 }