Set realm when importing users via keycloak-add-user.json

Closes #33060

Signed-off-by: Stefan Guilhen <sguilhen@redhat.com>

services/src/main/java/org/keycloak/services/resources/KeycloakApplication.java

@@ -261,6 +261,7 @@ public abstract class KeycloakApplication extends Application {
                                 if (realm == null) {
                                     ServicesLogger.LOGGER.addUserFailedRealmNotFound(userRep.getUsername(), realmRep.getRealm());
                                 }
+                                session.getContext().setRealm(realm);
 
                                 UserProvider users = session.users();